This wireless smart doorbell is good and suitable for commercial residential area, office, restaurant, club, etc. This set includes 1 receiver and 1 transmitter.

Features:
High quality ABS material, green environmental protection. Wireless installation, easy and convenient.
Wireless smart doorbell system of 1 receiver and 1 transmitter.
Creative, waterproof design, preventing rainwater infiltration which can prolong service life.
36 chords included: pick one your favorite chime, and you can adjust the volume by pressing the key on the receiver.
Loud enough to hear at any of the 2 levels of volume.
Range up to 120 meters in the open air, suitable for home and high-rise buildings.
Fashionable light-operated LED light, intelligent and energy-efficient.
Suitable for commercial residential area, office, restaurant, club, etc.

Specifications:
Color: Black
Material: ABS
Receiver:
Plug: EU Plug
Voltage: AC 220-250V
Current: 100mA
Work frequency: 315MHz
Volume: 65-85dB
Receiving Distance: 120m
Music: 36 Chords for Option
Transmitter:
Voltage: 12V(Battery: 23A 12V, Not included)
LED Indicator: Yes
Temperature: -10℃~50℃
Waterproof: Yes
Product Dimensions:
Receiver: 110 * 65mm / 3.94 * 2.56in (L * W)
Transmitter: 75 * 45mm / 2.95 * 1.77in (L * W)
Product Weight:
Receiver: 79g / 2.8oz
Transmitter: 31g / 1.1oz
Package Size: 24.5 * 17.5 * 7cm / 9.64 * 6.89 * 2.75in (L * W * H)
Package Weight: 175g / 6.2oz

Package List:
1 * Transmitter
1 * Receiver
2 * Adhesive Tapes
2 * Screws