Specification:Item Type: Wifi SwitchMaterial: ABSGross Weight: 80g / 2.8ozRemote Control Battery Type : button battery (remote control with built in battery delivered)Remote Control Battery Model: CR2016Remote Control Battery Capacity: 200mAhNumber of Batteries: 3How to Use:Receiver switch pairing method(1) On and off pairing coding press the learning key, the light goes off (marking has entered the learning state), release the learning key, press any key of the remote control, the light flashes four times and then lights up to indicate successful learning.(2) Clear coding methodPress and hold the learning key for about 4s, the indicator light will go out and return to light to indicate successful clearing.(3) Working mode switchingSwitch the working mode by short circuiting different places.1. Self locking: short circuit vacant2. Inter locking: short circuiting T.M3. Point action: short circuiting M.LSelf locking, interlocking, pointing meaning explanation.Package List:1 x Wireless Receiver1 x Remote Control1 x Double Sided AdhesiveNote:The controller can learn 20 different coding and any keys of remote control, such as fixed coding or learning coding, beyond which the earliest learned remote control will be clear in turn.