* Item Weight: 8 ounces
* Ringtone: 36 choices
* Voltage: 1*Transmitter 12V/23A
* Chime Voltage range: AC 110V-240V
* Sound Volume Range:65-110dB
* Button Power Consumption:0.1W
* Working temperature: -10 ℃-55 ℃（receiver） -20℃-65℃(transmitter)
1) Non-professinals do not open it to repair, in case that damage precision electronic components.
2) There are high-voltage circuits inside, do not open it.
3) Avoid prolonged exposure to sunlight and rain soaked, and installing on a metal position.
4) Use this product properly, can extend the life effectively.
5) The actual use distance with remote control will be shortened by the environment factors.
6) Available distance was shortened or missing ring, please replace the battery.
a) Wireless signals are vulnerable to metal, wall, concrete, obstacles such as cell phones in elevators or enclosed within the iron house without a signal or signal is weak
b) The doorbell in open and interference-free environment to test up to 300m, through the security door, walls can reach 25-150 meters [depending on environment]
1 * Doorbell Receiver
2 * Screws
1 * Button
1 * 3M Double-side sticker
✔ 36 CHIME & MELODY OPTIONS - 36Chimes (Including 16 chords).4 levels of adjustable volume from 25db-110db.
✔ 4 LEVER VOLUME - You can choose from different volume levels so that you can customize what you and your guests hear and how they hear it.
✔ SUPER LONG WORKING DISTANCE - Wireless Range up to 1000 Feet (300m) in open space. Even there are many obstacles, the operation range can still reach up to 100-500ft.
✔ EASY TO USE - The wireless, easy mounting design does not damage wall or door decor and allows portable use of the receiver as well as the transmitter.
✔ WIDE APPLICATION - Perfect for House, villas, factories, hotels, hospitals, restaurants, shops and office space.