Features:
1. The perfect combination of doorbell and walkie-talkie, supporting multiple walkie-talkies or doorbells simultaneously online.
2. You can know the visitors anytime, anywhere, and the distance is up to 3.1mile (5 kilometers).
3. Easy to install, it can be installed in a few minutes with our screw package.
4. Outdoor doorbell, defensive shell, waterproof, anti-exposure, anti-dust.
5. Rechargeable lithium battery, automatic sleep design, low power consumption, long life, 3 hours of charging, 60 days of use.
6. The doorbell that integrates receiving and transmitting has strong penetrating power and signal transmission is not affected.
7. Can be used as a caller for the elderly.
8. Can be applied to a variety of occasions such as home, hotel, KTV.

Specification:
Item Type: Intercom Doorbell .
Color: As Picture Shown.
Frequency Range: 470.00-480.00mhz.
Rated Voltage: DC3.7V Rechargeable Lithium Battery(Included).
Antenna Impedance: 50 Ohms.
Working Mode: Same Frequency Simplex or Different Frequency Simplex.
Output Power: 5W.
Maximum Frequency Offsets (Wideband, Narrowband) <5k/2.5khz.
Clutter Radiation: <7 W.
Emission Current: 2.8A.
Lithium Battery: 1800mah(Included).
Ctcss/dcs (Wideband, Narrowband): 0.75khz 50hz, 0.37khz 30hz.
Modulation Sensitivity: 12mA.
Modulation Distortion: 5%.
Reference Sensitivity: -122dbm (12db Sinad).
Audio Power: 1W.
Effective Distance: Approx. 5 kilometers/3.1mile.

Package included:
1 x Doorbell (Built-in DC3.7V Lithium Battery).
2 x Walkie-talkie (Built-in DC3.7V Lithium Battery).
1 x USB Data Cable.
1 x Mounting Screw Package.
2 x Lanyard.
1 x Instruction Manual
Product Attributes:

Weight (lbs.): 1.08 lb