Panel Transmitter Specifications: Working frequency: 433MHz. Battery model: CR2032 alkaline battery (battery not included). Encoding specification: 1527. Distance: Indoor (20 meters/65 feet), Outdoor (80 meters/262 feet). Size (L/W/H): 86mm x 86mm x 13mm. Weight: 60g/2.11oz. Receiver Specifications: 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 for storing remote control quantity: 15 pcs. Support for remote control type: Learning code (1527), Code (2262). Working mode: Momentary, Toggle, and Latching. Wiring diagram: Terminal block. Color: 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 to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.