Yeeco® 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Control Module Electrical Relay Switches for Cooler

Input: 12V DC (relay powered) Control voltage: 250V Max 30A single channel relay of 4 terminal shunt It can be used to cooler control ,heater control

KNACRO 1-Channel 30A High Current 5V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control (DC 5V) : Electronics

4 Channel Relay Module Automatic Control High Low Level Trigger 30A High Power Relay Load Control with LED Indicating Relay Switch Optocoupler Isolation for Automated Control Circuits (4 Channel) - Yahoo Shopping

30A High Current Contactor Switch 12V Electric Relay Board DC Power Control new

30A Power Switch Circuit Single Electric Relays 12V DC Current Control Module

12V DC Relay Module 240VAC 30A High Current Contactor Switch Trigger Board NO/NC

Yeeco® 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Control Module Electrical Relay Switches for Cooler Heater Refit Water Heater Control : Industrial & Scientific

KNACRO 1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) : Electronics

Main Feature: Product Name: Optocoupler Isolation Relay Module; Output Capability: AC 250V/30A, less than DC 30V/30A; Optional Style: DC5V, DC12V,