4 Channel Relay Module with Optocoupler Isolation Suport High Low Level Triger Compatible 10A 5V 12V 24V Relay Module Board Shield(12V)

【STABLE PERFORMANCE】 :Our 4 channel relay module adopt patch photocoupler isolation ,strong driving ability ,stable performance .Trigger current is 5mA .No rust ,safe and convenient to use . 【5V 12V 24V THREE OPTIONAL VOLTAGES】 :Module operating voltage of our Optocoupler Relay Module is 5V ,12V ,24V for choice .DC + connected to the positive pole of power supply (voltage is required for relay) ,DCconnect to the power negative pole . 【CONVENIENT TO USE】 :Each path of the module can be triggered by the high level or low level through a jumper setting .Humanized interface design ,all interfaces can be directly connected through the terminal lead ,very convenient . 【FAULT TOLERANT DESIGN】 :This high & low trigger module fault tolerant design ,even if the control line breaks ,the relay will not move .The relay module with good short circuit . 【WITH INDICATOR LIGHT】 :The optocoupler relay module has power indicator light (green) and 4 way relay state indicator light (red) .Our relay module is brand new and high quality .