Wireless control LED lamp string, Christmas tree light string, light control switch Long range working voltage Ultra low power,High sensitive response. Operating Voltage: DC 3.6V-24V Encoding : EV1527 Learning code Specifications Of The Receiver: Working Voltage: DC 3.6V~24V Maximum load: 2A Static Current: Less than 5 mA Working Frequency: 433MHz Reception Sensitivity: Less than -108dBm Learning Style: Learning Button Modulation Mode:ASK (superheterodyne) Number of Stored Remote Controls:less than equal 10 Working Temperature: -20 degrees 80 degrees Working Mode: Momentary, Toggle, Latching Mode Size: 25.5 mm x 13mm x 5mm (length x width x high) Specifications Of The Transmitter: Operating RF Frequency: 433MHz. Power by 3V Coin Cell Button Battery (Battery included ), Button: 4 buttons Coded System: 1527 Learning Code. Working Voltage: DC 6V. Working Current: 12mA. Transmitting Power: 10mW. Wireless Operating Distance: 50m(Free Space). Transmission Rate: 50 ~ 60KHz. Frequency Deviation: 0.2MHz. Colour:Photo Color Material:Plastic + Metal Package Contents: 2 x Receiver 1 x Remote Control Only the above package content, other products are not included. Note: Light 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.