Product application scope: no wiring required for lamp switches, low-power water pumps, remote control switches, etc., requiring a matching remote control or 433 RF remote control devices such as stickers; You only need to add a gateway to achieve remote APP control on your mobile phone Transmitter (Remote): Operating frequency: 433MHz Operating voltage: 3V ; Operating Current: 12mA; Transmitting power: 10mw; Modulation mode: ASK (AM). Encoding type: Learning. Transfers distance: 20-50m Controller (Receiver): Input Power: AC90-250V 60HZ/50HZ Max current: 10 A RF Frequency: 433Mhz Working temperature:-30-+80 RF working mode: superheterodyne Receive sensitivity: 97dbm Transmitting distance: more than 50 m ( open space) Remote storage:20pcs Support remote type: Learning code 1527code Colour:As Shown Material:PC flame retardant Package Contents: 1 * Remote Control Switch 1 * Controller 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.