S-6001 Wireless Doorbell Product Material: ABS+Electronics Measurement: Trasmitter: 60x32x15mm Receiver: 90x62x21mm Product Functions: 1). 32 PCS Chord Music for your choose 2). Remote control distance: 30-50meters 3). Easy Installation, easy use 4). Low cost but nice value for family security 5). Reliable quality and cute shape 6). Music Door chimes make enjoyment 7). Transmitter use waterproof or none waterproof 8). Power...

1/4" color ccd camera Lock control 4 wires connection surface construction 1 subscriber Output power...