Multi-channel Relay Controller 8 Channel 12v Relay Module @ Best Price In India Campus Component DPDT Signal Relay Board GND: Power supply ground and control signal ground. Input control signal voltage: 0V - 0., 5Vdc, low level, relay not action., 2., 5V - 24Vdc, high level, relay action. Wire connection and PCB size: VCC: Power supply input. This is a very simple module board, no paper specifications, any questions, feel free to tell me., Datasheet: https://images-na., ssl-images-amazon. Power Relay Module Board DPDT 5 Amp Operating Voltage: DC 12V. IN-X: Control signal input, Low: relay not action, High: relay action. This is a very simple module board... Input control signal high level current: 2., 5V: 0., 1mA., 5V: 0., 35mA., 12V: 1., 1mA., 20V: 1., 9mA Relay Spec: Relay Part Number: RY12W-K series. Darlington transistors circuit driving relay, improve the reliability of action., Pitch 3., 81mm / 0., 15 screw terminal block, wire range 26-16AWG, strip length 5mm / 0., 2, Metric M2 slotted screw., Datasheet: https://images-na., ssl-images-amazon. Operating Voltage: DC 12V. com/images/I/A1vg1+5HA8L., pdf com/images/I/A1vg1+5HA8L., pdf ELECTRONICS-SALON 4 DPDT Signal Relay Module Board, DC 5V Version, for... IN-X: Control signal input, Low: relay not action, High: relay action.