Tiny Power over Ethernet (PoE) module with 1 Channel Digital Input (32-bit Counters) and 1 Channel Relay Output. Dry Contact 60VDC/VAC. Operating temperature ranges are from -25°C ~ +75°C (-13°F ~ +167°F)


Tiny Power over Ethernet (PoE) module with 1 Channel Digital Input (32-bit Counters) and 1 Channel Relay Output. Dry Contact 60VDC/VAC. Operating temperature ranges are from -25°C ~ +75°C (-13°F ~ +167°F)

  Price:  $169.00  


tPET-PD2R1 Application ImageProviding networking ability and various digital I/O functions, the tPET-PD2R1 models are IP-based Ethernet I/O monitoring and control modules. The module can be remotely controlled through a 10/100 M Ethernet network by using Modbus TCP/UDP protocol. Modbus has become a de facto standard communications protocol in industry, and is now the most commonly available means of connecting industrial electronic devices. This makes the tPET-PD2R1 model perfect for integration with the HMI, SCADA, PLC and other software systems.

The functionality of the tPET-PD2R1 module is almost the same as the PET-7000 series. The tPET-PD2R1 Ethernet I/O modules support various I/O types, like photo-isolated digital input, relay contact, PhotoMOS relay, and open-collector output. The module can be used to create DI to DO pair-connect through the Ethernet. Once the configuration is completed, the modules can poll the status of the local DI channels and then use the Modbus/TCP protocol to continuously write to a remote DO device in the background. It's useful when connecting digital I/O devices that do not themselves have Ethernet capability.

The tPET-PD2R1 provides dual watchdog: CPU watchdog and host watchdog. The CPU watchdog automatically resets it-self when the built-in firmware runs abnormally. The host watchdog monitors the host controller (PC or PLC), and the output of the module can go to predefined state (safe value) when the host fails.

For maximum space savings, the tPET-PD2R1 is offered in an amazing tiny form-factor that makes it can be easily installed in anywhere, even directly embedded into a machine. It is equipped with two removable terminal block connectors for easy wiring, and features a powerful 32-bit ARM MCU to handle efficient network trafficking. The tPET-PD2R1 offers true IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) using a standard category 5 Ethernet cable to receive power from a PoE switch like the NS-205PSE. When there is no PoE switch on site, the tPET series accepts power input from DC adapter.

  • DHCP Network Configurable
  • Built-in Web Server
  • Built-in Dual Watchdog
  • PWM (Pulse with Modulation
  • Frequency Measurements
  • Low Power Consumption
  • Easy Wiring for Convenience
  • Ventilated Housing Designed to Operate Between -25°C ~ +75°C (-13°F ~ +167°F)


CPU 32-bit MCU
Dual Watchdog Yes
Ethernet Port 10/100 Base-TX, 8-Pin RJ-45 x1, 
(Auto-negotiating, Auto-MDI/MDIX, LED indicator)
PoE (IEEE 802.3af, Class 1)
LED Display
S1 PoE indicator (Green)
System indicator (Red)
E1 Link/Act indicator (Green)
10/100 M indicator (Yellow)
Dimensions 52 mm x 27 mm x 98 mm
Installation DIN-Rail mounting
Operating Temperature -25°C ~ +75°C (-13°F ~ +167°F)
Storage Temperature -30°C ~ +80°C (-22°F ~ +176°F)
Humidity 10 ~ 90 % RH, non-condensing
Power Requirements
Power Input PoE: IEEE 802.3af, Class 1
Terminal block: +12 ~ 48 VDC (non-regulated)
Power Consumption 0.03 A @ 48 VDC for tPET-P2R2

I/O Specifications

Digital Input
Input Channels 2
Input Type (Device) Dry Contact (Source)
On Voltage Level Close to GND
Off Voltage Level Open
Input Impedence -
Counters Max. Count 4,294,967,285 (32 bits)
Min. Pulse Width 0.15 ms
Frequency Measurement 3.5 kHz (without filter)
Overvoltage Protection -
Isolation 3750 Vrms
Effective Distance 500 M max.
Relay Output
Output Channels 2
Output Type (Module) Power Relay, Form A (SPST N.O.)
Load Voltage 250 VAC/30 VDC
Max. Load Current 5.0 A/channel at 25°C
Operate Time 6 ms
Release Time 3 ms
PWM 50 Hz Max. 
(High/Low duty cycle range = 10 ~ 65,535 ms)
Electrical Life (Resistive Load) VED 5 A 250 VAC 30,000 ops (10 ops/minute) at 75 °C
UL 5 A 30 VDC 70,000 ops (10 ops/minute) at 75 °C
Mechanical Life 20,000,000 ops. At no load (300 ops./ minute)
Isolation 3000 Vrms

Related Products