tET/tPET Series

The tET-A4 CR is a compact Ethernet I/O module with four digital outputs, configured as PNP (source) open-collector channels. It lets an engineer switch remote loads from a Modbus TCP, Modbus UDP or MQTT host over a 10/100 Base-Tx network, which suits PLC, HMI and SCADA integration.Its small footprint allows it to be fitted on a DIN rail or embedded directly within a machine. The module is supplied with a web server for configuration, and it can be updated with new firmware over Ethernet. Each output has a power-on value and a safe value, and the module provides both a CPU watchdog and a host watchdog to protect the outputs if the controller fails.Key points for specification:Four PNP (source) open-collector outputs rated at 650 mA per channel, with a load voltage of +10 to +40 VDCOperates from +12 to +48 VDC supplied through a removable terminal blockPhoto-isolated outputs with 3750 Vrms isolationApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-AD2 CR is a DIN-rail Ethernet I/O module that brings two single-ended analog inputs onto a network. Each input can be configured for voltage ranges from 0 ~ 500 mV up to 0 ~ 10 V, or for current ranges of 0 ~ +20 mA and +4 ~ +20 mA, so one module suits a wide mix of field transmitters and sensors.Data is available over Modbus TCP, Modbus UDP, MQTT and SNMP V2c through a single 10/100 Base-Tx RJ-45 port. Sampling can be switched between Normal Mode (10 Hz total across channels) and Fast Mode (200 Hz total), letting you trade accuracy for update speed. Open wire detection is provided for the 4 to 20 mA range.Electrical robustness is a strong point: the module offers 120 VDC overvoltage protection, 3000 VDC isolation between I/O and the module, 1500 VDC isolation on the Ethernet side, and ESD and EFT immunity to IEC 61000-4-2 and IEC 61000-4-4. Configuration is handled through the built-in web server, with password and IP filter access control. The module is powered from a +12 to +48 VDC terminal block and is rated for -25 ~ +75 °C operation.ApplicationsIndustrial automationIndustrial machineryBuilding automationFood and beverage systemsSemiconductor fabricationControl systems

The tET-C4 CR is a tiny Ethernet I/O module with four digital outputs. Each channel is an open-collector sink (NPN) output rated at 100 mA per channel, with a load voltage of +5 to +30 VDC. It is configured through its built-in web server and can be controlled over a 10/100 Base-Tx network using Modbus TCP, Modbus UDP or MQTT, which suits integration with HMI, SCADA, PLC and other software systems.Beyond basic switching, the module supports I/O pair connection, allowing the status of local inputs on one device to drive outputs on a remote device over Ethernet. A dual-watchdog arrangement provides a CPU watchdog for firmware faults and a host watchdog that can drive the outputs to a predefined Safe Value if the host controller fails. Digital outputs also have configurable power-on and safe values, and firmware can be updated via Ethernet.The module is powered from a terminal block at +12 to +48 VDC with reverse polarity protection, and draws 0.9 W. It has 3750 Vrms isolation on the digital outputs, is rated for an operating temperature of -25 ~ +75 °C, and mounts on a DIN rail in a 52 x 95 x 27 mm housing.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tET-DA2 CR brings two analog outputs onto Ethernet for control loops that need remote setpoints without a dedicated fieldbus gateway. Each channel can be set individually to 0 ~ 10 V, 0 ~ 20 mA or 4 ~ 20 mA, and the power-on and safe values are programmable, so outputs can be defined before and during a communication fault.Configuration is handled through the built-in web server, and the module supports Modbus TCP, Modbus UDP, MQTT and SNMP V2c. Dual-watchdog operation, I/O pair connection (push and pull) and firmware updates over Ethernet help with fault handling and maintenance in distributed installations. Isolation of 1500 VDC on the Ethernet side and 3000 VDC on the I/O side, together with 4 kV ESD protection, suits electrically demanding cabinets.The module is powered from +12 to +48 VDC and mounts on a DIN rail. It is rated for an operating range of -25 ~ +75 °C and is listed with CE, UKCA, FCC, RoHS and WEEE certifications.ApplicationsIndustrial automationIndustrial machineryBuilding automationFood and beverage systemsSemiconductor fabricationControl systems

The tET-P2A2 CR is a compact Ethernet I/O module that monitors two digital inputs and switches two digital outputs over a 10/100 Mbps network. It is designed for engineers who need remote DI/DO access in a small footprint, with Modbus TCP as the main control interface for connection to HMI, SCADA, PLC and other software systems.Each digital input is a wet-contact type with sink/source capability, latched input and 32-bit counter functions, and frequency measurement up to 3.5 kHz without filter. The outputs are source-type open-collector channels rated at 650 mA per channel, with short-circuit protection. Input and output circuits are isolated at 3750 Vrms. The module can also be set up for DI-to-DO pair connection across the Ethernet network.For resilience, the module provides a CPU watchdog and a host watchdog. If the host fails, the outputs can move to a predefined safe value, and the power-on value of the outputs can also be set. A built-in web server handles configuration, and firmware can be updated via Ethernet. The unit is powered from a terminal block at +12 to +48 VDC and mounts on DIN rail.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tET-P2C2 CR is a compact Ethernet I/O module for monitoring and switching digital signals over IP. It handles two digital inputs and two open-collector outputs in the NPN sink configuration, and is controlled over a 10/100 Base-Tx network using Modbus TCP, Modbus UDP or MQTT. Its small footprint allows it to be fitted in tight control cabinets or even embedded directly within a machine.The module can be configured through its built-in web server and can create DI-to-DO pair connections over Ethernet, so the status of a local input can drive a remote output in the background without a host controller in the loop. Inputs support latched operation, 32-bit counting and frequency measurement, while the outputs offer power-on and safe values.For resilience, the module provides a CPU watchdog that resets the system if the firmware misbehaves, and a host watchdog that moves the outputs to their predefined safe state if the controlling PC or PLC fails. Firmware can be updated over Ethernet, and the unit is powered from a terminal block at +12 to +48 VDC.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-P2POR2 CR is a tiny IP-based I/O module that combines two wet-contact digital inputs with two PhotoMOS relay outputs. It is configured through a built-in web server and can be controlled over Ethernet using Modbus TCP, Modbus UDP or MQTT, which makes it straightforward to connect to HMI, SCADA, PLC and other software systems.Beyond basic switching and sensing, the module offers latched digital inputs, 32-bit counters and frequency measurement, and I/O pair connection lets it poll local inputs and write to a remote digital output over the network. Its dual-watchdog function monitors both the module's own CPU and the host controller, with the outputs able to move to a predefined Safe Value if the host fails.The module is powered from a +12 to +48 VDC terminal block and mounts on a DIN rail in a small 52 x 95 x 27 mm (W x L x H) housing. Relay contact ratings depend on operating temperature, so check the derating figures against your application before specifying it.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-P2R2 CR combines two wet-contact digital inputs with two Form A power relay outputs in a small DIN-rail housing. It is a practical choice where engineers need networked switching and status monitoring without a full PLC or larger I/O system.Modules are configured through the built-in web server and communicate over a 10/100 Base-Tx Ethernet port using Modbus TCP, Modbus UDP or MQTT. The digital inputs support latched operation, 32-bit counters and frequency measurement, and the module can be set up for I/O pair connection, where local input states are polled and written to a remote device over the network.For reliability, the module provides a CPU watchdog and a host watchdog. If the host controller fails, the outputs can move to a predefined Safe Value, and power-on values can be set for the digital outputs. Firmware can be updated over Ethernet.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tET-P6 CR is a compact Ethernet I/O module that brings six wet-contact digital inputs onto a 10/100 Base-Tx network. It can be monitored and configured over IP using Modbus TCP, Modbus UDP or MQTT, which makes it straightforward to connect to HMI, SCADA, PLC and other software systems.The module supports latched DI, 32-bit counters and frequency measurement, and can be set up for DI-to-DO pair connection over Ethernet. Its CPU and host watchdogs help keep the unit and the link to the controller under supervision, and firmware can be updated via Ethernet.The small housing mounts on DIN rail and uses two removable terminal blocks for wiring. It is powered from +12 to +48 VDC with reverse polarity protection and is rated for an operating range of -25 ~ +75 °C.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-PD2POR2 CR is a tiny IP-based Ethernet I/O module that combines two dry-contact digital inputs with two PhotoMOS relay outputs. It is intended for remote monitoring and switching where a small footprint and simple network integration matter more than a large channel count.Configuration is carried out through the built-in web server, and the module communicates over a 10/100 Base-Tx RJ-45 port using Modbus TCP, Modbus UDP or MQTT. Its two digital inputs support latched DI, 32-bit counters and frequency measurement, and the outputs can be set to a power-on value and a safe value. A dual-watchdog arrangement, covering the CPU and the host controller, helps keep outputs in a defined state if the host fails.Power is taken from a +12 to +48 VDC terminal block, with reverse polarity protection.Supplied with DIN-rail mounting, in a case measuring 52 x 95 x 27 mm (W x L x H).ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-PD2R1 CR is a compact IP-based Ethernet I/O module that pairs two dry-contact digital inputs with a single Form A power relay output. It suits engineers who need to monitor switch contacts and switch a load from a network host, within a very small footprint that mounts on a DIN rail.Configuration is handled through a built-in web server, and the module supports Modbus TCP, Modbus UDP and MQTT. Digital inputs can be set to latched mode, and each input offers a 32-bit counter and frequency measurement, with a maximum counting frequency of 3.5 kHz without filter. The module can also be configured for I/O pair connection, polling local DI channels and writing to a remote DO device over Ethernet.Reliability features include a CPU watchdog and a host watchdog, with a programmable safe value for the relay output if the host controller fails. Output power-on and safe values are configurable, and firmware can be updated over Ethernet. Power is taken from a terminal block at +12 to +48 VDC, with reverse polarity protection.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tET-PD6 CR is a compact Ethernet module that monitors six dry-contact digital inputs and reports their status over a 10/100 Base-Tx network. It can be configured through its built-in web server and communicates using Modbus TCP, Modbus UDP or MQTT, so it can feed HMI, SCADA, PLC or other software systems without additional protocol converters.Each input supports latched operation, 32-bit counting and frequency measurement, with a rated frequency of 3.5 kHz without filter and a minimum pulse width of 0.15 ms. The inputs are isolated to 3750 Vrms and the effective wiring distance is up to 500 m, which suits distributed sensing in plant and building installations.The module uses a 32-bit MCU, a CPU watchdog and a host watchdog for added operational security, and its firmware can be updated over Ethernet. Its small housing mounts on a DIN rail and it is powered from a +12 to +48 VDC terminal block with reverse polarity protection. It operates from -25 to +75 °C.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-A4 is a compact Ethernet I/O module that gives engineers remote control of four source-type (PNP) open-collector digital outputs over 10/100 Base-Tx Ethernet. It supports Modbus TCP, Modbus UDP and MQTT, so it can be integrated with HMI, SCADA, PLC and other software systems.A dual-watchdog design protects the process. The CPU watchdog resets the system if the built-in firmware runs abnormally, while the host watchdog switches the outputs to a predefined Safe Value if the controller fails. Power can come from PoE (IEEE 802.3af, Class 1) over a standard category 5 cable, or from a +12 to +48 VDC terminal block input when no PoE switch is available.The module measures 52 x 95 x 27 mm (W x L x H), mounts on DIN-rail and can be embedded directly in a machine. Two removable terminal blocks simplify wiring. The operating range is -25 ~ +75 °C.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

Compact PoE analog input for networked measurement. The tPET-AD2 takes two single-ended analog inputs and reports them over Ethernet, so it can be powered from the network cable or from a +12 to +48 VDC terminal block and placed close to the sensors it reads.Each input can be configured individually for voltage ranges from 0 ~ 500 mV up to 0 ~ 10 V, or current ranges of 0 ~ +20 mA and +4 ~ +20 mA, with open wire detection available for the 4 to 20 mA range. The module offers a choice of Normal Mode (10 Hz total) or Fast Mode (200 Hz total) sampling, and provides 120 VDC overvoltage protection and 3000 VDC intra-module isolation.Configuration is handled through the built-in web server, and the module supports Modbus TCP/UDP, MQTT and SNMP V2c, along with dual-watchdog operation and firmware updates over Ethernet. It is housed for DIN-rail mounting and rated for operation from -25 ~ +75 °C.ApplicationsIndustrial AutomationIndustrial MachineryBuilding AutomationFood and Beverage SystemsSemiconductor fabricationControl Systems

tPET-C4 CR is a compact Ethernet digital output module for engineers who need to switch loads remotely over a 10/100 Mbps network. Its four open-collector outputs are configured as sink (NPN) type and rated at 100 mA per channel, with a load voltage range of +5 to +30 VDC.The module supports Modbus TCP, Modbus UDP and MQTT, so it can be integrated with HMI, SCADA, PLC and other software systems. It can also be set up for I/O pair connection, where it writes to a remote digital output device based on the status of local inputs. A dual-watchdog arrangement covers the module firmware and the host controller, and the outputs can move to a predefined Safe Value if the host fails.Power can be taken from PoE (IEEE 802.3af, Class 1) over a standard Category 5 cable, or from a +12 to +48 VDC terminal block input, which provides redundancy. The module has a built-in web server for configuration and supports firmware updates via Ethernet. It measures 52 x 95 x 27 mm and is designed for DIN-rail mounting.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tPET-DA2 CR is a compact Ethernet analog output module that drives two channels of voltage or current from a single RJ-45 port. Each output can be set to 0 ~ 10 V, 0 ~ 20 mA or 4 ~ 20 mA, which suits control valves, drives and other field devices that accept standard analogue setpoints.The module can be powered over PoE (IEEE 802.3af, Class 1) or from a +12 to +48 VDC terminal block, and it is configured through its built-in web server. Modbus TCP/UDP, MQTT and SNMP V2c are supported, so the outputs can be commanded from SCADA, PLCs or IIoT platforms without a separate gateway.Each channel is configured individually, with programmable power-on and safe values to define the outputs during start-up or communication loss. Dual-watchdog support, I/O pair connection and firmware updates over Ethernet help keep the installation maintainable.ApplicationsIndustrial AutomationIndustrial MachineryBuilding AutomationFood and Beverage SystemsSemiconductor fabricationControl Systems

The tPET-P2A2 CR is an IP-based Ethernet I/O module that monitors two digital inputs and drives two open-collector outputs over a 10/100 Base-Tx network. It supports Modbus TCP, so it can be read and controlled directly from HMI, SCADA, PLC and other software systems.Beyond basic I/O, the module can run a DI-to-DO pair connection across Ethernet, polling local inputs and writing to a remote output device in the background. A CPU watchdog and a host watchdog, together with a configurable safe output value, help keep outputs in a defined state if the module or the controlling host fails.Power can come from PoE (IEEE 802.3af, Class 1) over a standard Category 5 cable, or from a +12 to +48 VDC terminal block input as a redundant supply. The module is designed for DIN-rail mounting and is rated for an operating range of -25 ~ +75 °C.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tPET-P2C2 CR is a tiny Ethernet I/O module that monitors two digital inputs and switches two open-collector outputs over a 10/100 Mbit/s network. Its Modbus TCP and Modbus UDP support allows straightforward integration with HMI, SCADA, PLC and other software systems, while MQTT is available for messaging-based architectures.The module is powered either from a PoE switch under IEEE 802.3af (Class 1) or from a +12 to +48 VDC terminal block supply, so it can run on a standard Cat 5 cable where a PoE switch is present and fall back to a DC adapter where it is not. Two removable terminal blocks simplify wiring, and the small 52 x 95 x 27 mm housing suits DIN-rail installation in tight control cabinets.Digital inputs offer latched DI, 32-bit counters and frequency measurement, and an I/O pair connection can be configured to push or pull status between modules. A CPU watchdog and a host watchdog protect against firmware faults and loss of the controlling host, with a predefined safe value for the outputs. Configuration is handled through the built-in web server.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-P2POR2 CR is a compact Ethernet I/O module for remote monitoring and switching of digital signals. It combines two wet-contact digital inputs with two PhotoMOS relay outputs, and it can be reached over a 10/100 Mbit/s Ethernet network using Modbus TCP, Modbus UDP or MQTT, which makes it straightforward to connect to HMI, SCADA, PLC or other software systems.Beyond basic I/O, the module can be configured to link a local digital input to a remote digital output over Ethernet, with the status polled and written in the background. A dual-watchdog arrangement covers both the module's own CPU and the host controller, and the outputs can be set to a predefined safe value if the host fails. Power can come from PoE (IEEE 802.3af, Class 1) or from a +12 to +48 VDC terminal block input.The housing is designed for DIN-rail mounting and measures 52 x 95 x 27 mm (W x L x H), with an operating temperature range of -25 ~ +75 °C. The built-in web server, password and IP filter access control, and firmware updates over Ethernet simplify commissioning and maintenance of distributed installations.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

tPET-P2R2 CR is a compact Ethernet I/O module for monitoring and switching digital signals over IP. It pairs two wet-contact digital inputs with two power relay outputs, and it can be configured and monitored through its built-in web server. Modbus TCP connects it directly to HMI, SCADA, PLC and other software systems.The module offers a dual-watchdog arrangement: a CPU watchdog that resets the unit if the firmware misbehaves, and a host watchdog that moves the outputs to a predefined safe value if the controlling PC or PLC fails. Power-on and safe values can be set for the digital outputs. The 2-ch DI supports latched input, 32-bit counters and frequency measurement, and DI-to-DO pair connection over Ethernet is available for direct device-to-device control.Power can be supplied by PoE (IEEE 802.3af, Class 1) over a standard Category 5 cable, or from a +12 to +48 VDC terminal block input where no PoE switch is present. The module mounts on DIN rail, measures 52 x 95 x 27 mm and operates from -25 to +75 °C, making it suitable for installation in control cabinets and machine enclosures.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-P6 is a tiny Ethernet I/O module that brings six sink/source wet-contact digital inputs onto a 10/100 Mbit/s network. It can be read and controlled from SCADA, HMI and PLC systems using Modbus TCP, Modbus UDP or MQTT, and its built-in web server handles configuration without extra software.Each input supports latched detection, 32-bit counting and frequency measurement, with a 3.5 kHz frequency rating when the input filter is disabled. The I/O pair connection feature lets the module poll local inputs and write to a remote device over Ethernet in the background, which is useful for simple distributed control without a central controller in the loop.Power can come from a standard Category 5 cable via IEEE 802.3af Class 1 PoE, or from a +12 to +48 VDC terminal block input when no PoE switch is available. A dual-watchdog arrangement covers both the module firmware and the host, with a programmable safe value for outputs if the host fails. The unit is housed in a 52 x 95 x 27 mm enclosure for DIN-rail mounting.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-PD2POR2 CR is a compact Ethernet I/O module that combines two dry-contact digital inputs with two PhotoMOS relay outputs. It is suited to engineers who need remote monitoring and switching over a 10/100 Base-Tx network without the footprint of a larger controller. The module is configured through its built-in web server and supports Modbus TCP, Modbus UDP and MQTT.Power can come from PoE (IEEE 802.3af, Class 1) over a standard Category 5 cable, or from a +12 to +48 VDC terminal block input, giving a redundant supply arrangement. Two dual-watchdog functions are provided: a CPU watchdog that resets the system if the firmware misbehaves, and a host watchdog that drives outputs to their configured Safe Value if the host controller fails.Input features include latched DI, 32-bit counters and frequency measurement, with a 3.5 kHz maximum frequency without filter. A DI-to-DO pair connection can be configured over Ethernet, allowing the module to poll local inputs and write to a remote output device in the background.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-PD2R1 CR is a tiny Ethernet I/O module that combines two dry-contact digital inputs with a single Form A power relay output. It suits engineers who need remote monitoring and switching on an IP network without a bulky controller, and it is designed to be fitted in small enclosures or directly into machinery.Power can come from a PoE switch under IEEE 802.3af (Class 1) over a standard Cat 5 cable, or from a +12 to +48 VDC supply on the terminal block, giving redundant power inputs. Configuration is handled through the built-in web server, and access can be restricted with a password and IP filter.The module supports Modbus TCP, Modbus UDP and MQTT, so it can be integrated with HMI, SCADA, PLC and other software systems. Its dual-watchdog function and programmable Safe Value on the outputs help keep the process in a defined state if the host or the module firmware fails.ApplicationsFactory automationBuilding automationHome automationRemote maintenance

The tPET-PD6 CR is a compact Ethernet I/O module that brings six dry-contact digital inputs onto a 10/100 Base-Tx network. It suits engineers who need remote status monitoring and counting without a large footprint, with configuration handled through the built-in web server.Each input supports latched DI, 32-bit counting and frequency measurement, and the module can pair its DI channels with a remote DO device over Ethernet, polling local inputs and writing to the remote device in the background. Communication runs over Modbus TCP, Modbus UDP or MQTT, so it can be integrated with HMI, SCADA, PLC and other software systems.Power can come from PoE (IEEE 802.3af, Class 1) over a standard Category 5 cable, or from a +12 to +48 VDC terminal block input where no PoE switch is available. A CPU watchdog and a host watchdog help maintain operation, and the module mounts on DIN-rail or can be embedded directly into a machine.ApplicationsFactory automationBuilding automationHome automationRemote maintenance