Wireless Doorbell Welcome Alarm Gong Bell Motion Sensor Doorbell : Easy to use: The wireless infrared system alerts you when someone enters your property With the system, you will always notice in advance that someone is on their way to your door Reliable range: detects and sends signal to receiver from up to 400 feet away Designed with safety in mind: alerts you when someone enters your driveway, such as guests, vehicles, intruders, pets or children coming or going Easy installation: thanks to simple wireless, double-sided battery tape, wireless doorbell and sets up in seconds you the ability to spend time elsewhere All fittings are included in the package (except batteries) Wide application: ideal for front door, window frames, driveways, walking paths and any place in the house where you are warned about traffic - Inner mesh panties Material: plastic Safe Food Protection: Power supply: 9V sensor / receiver 2 AA batteries (included) Transmitter size (L. X . X H ): Ok. 8,9 x 6,2 x 4,4 cm / 3,5 x 2,4 x 1,7 inches Receiver Size (L. X . X H ): Ok. 8,9 x 6,6 x 3,8 cm / 3,5 x 2,6 x 1,5 inches Receiver Switch Setting: High / Volume / Off contains: 2 pieces PIR sensors (uses 2 AAA, included) 1 receiver 1 set of mounting accessories