Specifications Of The Transmitter: Operating Frequency: 433MHz Power by 3V Coin Cell Button Battery (Battery included ) Material: PVC Button: 2 Buttons Size: 59mm x 28mm x 8mm Operating Voltage: 3V Operating Current: 12mA Transmitting Power: 10mw Modulation Mode: ASK (AM) Encoding Type: Learning Transfers Distance: 20-50 m Specifications Of The Receiver: RF Working Mode: Superheterodyne Reception Modulation Mode: ASK Working Mode: Momentary, Toggle, Latching and Time Delay Mode. Input Voltage: DC 10 ~ 14V RF Frequency: 433MHz Quiescent Current: 5mA Receiving Sensitivity: 97dbm Remote Control Range: 100m (Free Space). Wired Connection Way: Fixed Wiring Pillar. Decoding Mode:MCU Software Decoding. Working Mode:Momentary, Toggle, Interlocked Mode Latching Time delay (5s ,10s ,15s ) Wiring Diagram 1: +V: 12V + (Input). - V: 12V - (Input). NO: Normal Open(Output). COM:Common(Output). NC: Normal Close(Output). Color:Black Material: PCB+plastic Circuit Board Size: 3.5 x 3.0 x 1.8cm Due to different batches, the appearance, color, and printed words of the product , which does not affect its use. Package Contents: 1 x Receiver 2 x Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.