4-Channel Solid State Relay Module

Description Description: Solid state relay 240V 2A, output with resistance fuse 240V 2A. Input power: 5V Input control signal voltage: 0-2.5V state low-level relay ON and 3.3-5V state high-level relay OFF Input section: DC : Connect the positive pole of the power supply (powered by the relay voltage) DC-: connected to the negative pole of the power supply CH1: 1st relay module signal trigger terminal (low-level trigger is valid) CH2: 2nd-way relay module signal trigger terminal (low-level trigger is valid) CH3: 3rd-way relay module signal trigger terminal (low-level trigger is valid) CH4: 4th-way relay module signal trigger terminal (low-level trigger is valid)