5V DC 4-Channel Solid-State Relay Board for Arduino

• OMRON 5V 240V solid state relay 2A, output with resistance type fuse 240V 2A.
• Size: 57*55*25 (length * width * height) net weight: 40g
• The input power supply: 5V DC (160MA)
• The input control signal voltage:  (0-2.5V the state of low level relay OFF)  -  (3.3-5V high level relay ON)
• the 2.54CM pin and blue KF301 terminal is connected to the line of control more convenient.

Module interface: 

• DC+: connect the power supply positive (press the relay voltage power supply)
• DC-: the cathode of a power supply
• CH1: 1 relay module signal trigger end (high level trigger effective)
• CH2: 2 relay module signal trigger end (high level trigger effective)
• CH3: 3 relay module signal trigger end (high level trigger effective)
• CH4: 4 relay module signal trigger end (high level trigger effective)