Specifications Of The Wall Panel Transmitter:Operating Frequency: 433MHz. Battery Model: CR2032 Alkaline Battery (Package Not Included Battery). Coding Specification: 1527. Distance: Indoor (20 Meters/65 Feets) , Outdoor (80 Meters/262 Feets). Size(L/W/H): 86mm x 86mm x 13mm. Weight: 60g/2.110z. Specifications Of The Receiver: RF Frequency: 433Mhz. Input Voltage: AC 90V-250V. Modulation Mode: ASK. Receiver Sensitivity: -107 dbm. RF Working Mode: Superheterodyne Reception. Remote Control Range: 50 Meters (Open Space). Support Storing The Quantity Of Remote Control: 15 PCS. Support The Type Of Remote Control: Learning Code(1527), Fixed Code(2262). Working Mode: Momentary, Toggle and Latching. Wiring Connection Way: Fixed Wiring Pillar. Colour:White Material:ABS+Electronic components Package Contents: 1 x 3 way switch 3 x receivers 1 x remote Control Only the above package content, other products are not included. Note: Light shooting 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.