Demension: 38*84 (L * W * H, mm) Materials: Plastic Main functions: Remote control with password Operation steps:1. Extract the battery insulation sheet (for first use)2. Set password: press [Password] key, then enter a 4-digit password, and repeat it, such as [password] [1234] [1234]3. Start device: first, put the device on the desk or paste on the desk, make full access to the bottom security ...