Style:1 Way Kit ★Packing Listing one receiver one transmitter 2*Double-sided tapes for each transmitter ★Features ★Technical Data Of Wall Panel Transmitter: Operating Frequency: 433MHz. Material: HDPE(Type2) Plastic. Coding Specification: 1527. Distance: Indoor (20 Meters/65 Feets) , Outdoor (80 Meters/262 Feets). Color: White Size(L/W/H): 86mm x 86mm x 13mm. Weight: 60g/2.1ounces. ★Technical Data Of Receiver: Model Number: KR2201-4. Encoding Type: Intelligent Learning Code. RF Working Mode: Superheterodyne Reception. Modulation Mode: ASK. RF Frequency: 433MHz. Input Voltage: AC 85V~250V. Quiescent Current: 5mA. Receiving Sensitivity: >97dbm. Remote Control Range: >50m (Free Space). Wired Connection Way: Fixed Wiring Pillar. Color: Green(PCB Board), White (Outside Shell). Package Size: 8.1 * 3.6 * 2.0cm / 3.1 * 1.2 * 0.78in. Package Weight: 40g /1.41oz.