Ethernet Relay Network Wifi Switch Modbus MQTT TCP UDP Web HTTP Schedule Task CAN RS485 CoAP Domoticz Timer Module
Parameter | DT-R002 | DT-R004 | DT-R008 | DT-R016 | DT-R032 |
Photo | ![]() | ![]() | ![]() | ![]() | ![]() |
Size(Relay Board) | 87*68mm | 91.6*86.4mm | 122*87mm | 250*107mm | 370*107mm |
Size(DIN35 Case) | 90*90*40mm | 115*90*40mm | 145*90*40mm | 252*123*43mm | 373*123*43mm |
Power Adapter | 12VDC/1.5A | 12VDC/1.5A | 12VDC/1.5A | 12VDC/2A | 12VDC/3A |
Power Consumption | 2W | 3W | 5W | 9W | 16W |
Quantity Relays | 2DO | 4DO | 8DO | 16DO | 32DO |
Quantity Digital Input | 2DI | 4DI | 8DI | 16DI | 32DI2DI |
Quantity Wiegand | 1(optional) | 1(optional) | 0 | 1 | 1 |
RTC | NO | NO | NO | Optional | Optional |
Interface | RJ45, WiFi, RS485, CAN, Wiegand(optional) |
Power Supply | 12V/24VDC, 5V/24VAC |
Working Temperature | -20~75℃ |
Storage Temperature | -40~80℃ |
Protocol | MQTT, Modbus-RTU/TCP/UDP/ASCII, TCP, UDP, HTTP GET CGI, CoAP |
Home Automation | Domoticz, Home Assistant, openHAB, Red-Node |
Function | IP Watchdog, Task, NTP Client, Input mutual control, OTA Upgrade |
Ethernet IP | 192.168.1.100 |
Web User/PWD | admin/admin |
WiFi AP IP | 192.168.7.1 |
WiFi AP SSID/PWD | dtrelaySN/dtpassword |
WiFi STA IP | 192.168.1.97 |
Default ethernet IP: 192.168.1.100
Default WIFI AP IP: 192.168.7.1
Default WIFI STA IP: 192.168.1.97
WIFI SSID: dtrelaySN
WIFI Password: dtpassword
Reset the relay board
1.Power off the relay 2.Close the 2pins on the relay board 3.Power on
Relay_spark_killer

Manual
Example
MQTT
Linux/unix shell test relay
Software
Domoticz_plugins
HomeAssistant
http_format
openHAB
programing manual_en.pdf | relay programing manual |
user_manual_en.pdf | relay user manual |
cgitest_v2_2.exe | HTTP CGI api test tool |
ipfinder_v2_2.exe | relay ip finder tool,use to find IP when you forget |
net_test | sample ethernet wifi test relay |
rs485_test | rs485 test relay |
relay.sh | linux/unix shell test relay |
linux_find_relay_ip.txt | how to find IP at linux/unix system |
cgitest_v1_2.exe | relay board CGI API test tool |
Domoticz_plugins | Domoticz plugins |
MQTT | MQTT tools and doc |
modbus_test_example.txt | modbus-rtu/ascii/tcp example |
relay_spark_killer.png | spark killer |
Demo_code | Demo code |
powershell_example.txt | PowerShell ON/OFF relay example code(thanks Daniel Ivanchuk) |