Multi Channel 4-20Ma 0-5V 0-10V PLC Analog I/O Input to RS485 Modbus RTU TCP Converter buy it!
$17.10-$26.60
5V Relay 1/2/4/6/8 Channel OMRON SSR High Low Level Solid State Relay Module 250V 2ADC/AC buy it!
$1.00-$6.00
ESP8266 1/2/4/8/16 Channel Way Wireless WIFI Relay Module AC/DC ESP ESP-12F WIFI Development Board Module buy it!
$14.50-$15.00
Smart Electronics 1/2/4 Road Channel 5V DC Relay Module Solid State Low Level G3MB-202P Relay SSR AVR DSP buy it!
$0.10-$0.99
Module 4 Channel 5V Relay Shield Module Four Channel Relay Control Board Relay Expansion Board
$0.10-$2.00
