3Channel 5V/DC Relay Module Relay Expansion Board with Optocoupler Insulation for Arduino

Description

Power Supply Voltage: 5V
Trigger Level: 3V-7V
Trigger Current: 5mA
Control Voltage: AC 0-250V or DC 0-30V
Control Current: 0-7A
Size: 48X42X20mm
Function: Weak current control strong current (low voltage control high voltage;level signal control mechanical signal)
Using Method: This module is high level trigger,on-board pin marked GND(RGND)5V is respectively relay 5V power negative and positive: CH1,CH2, CH3 is control port, high level trigger: that is to say, after module power on, control port receives high level, the relay will be connected

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