5V solid state relays 240V 2A, output with resistive fuse 240V 2A. Size:55*33*25(L * W * H) Net Weight: 40g Input Power: 5V DC (160MA) Interface: DC+:connect to positive(according to the relay voltage supply) DC-:connect to negative CH relay module signal triggering side (high level trigger active) Input control signal voltage:Voltage , static current ,working current ,trigger voltage ,trigger current (0-2.5V low state relay OFF) (3.3-5V state high relay ON)