Overview:
The old people cannot hear the doorbell when someone knocks at the door? The doorbell is dull and boring when guests come? The doorbell sound is so low that it cannot inform you timely when visitors come? With 501D doorbell， all these problems will be solved. Easy to install， cables are no needed. 32-melody for selection， you can change the melody according to your mood. Double speakers design， loud doorbell sound， 100 meters remote control distance， you can hear the doorbell clearly at home. Anti-interference design and 32-melody make your doorbell different， and you can welcome guests immediately.

Brand: N/A
Model: 501D
Quantity: 1 Set
Color: White + Blue
Material: ABS
Remote control range: 100m
Screen size: No
Voice decibels: 25~75dB
Power adapter: No
Built-in 32 melodies
Remote control power: !#!lt!*!10mw
Receiver rated voltage: 50Hz/60Hz
Receiver standby voltage: !#!lt!*!1.0mA
Working frequency: 315MHz+/-2MHz
Power supply:
Transmitter: 1 x 12V 23A alkaline battery (Included)
Receiver: 2 x AA batteries (Not included)
Receiver dimensions: 9.8cm x 6.3cm x 3.2cm
Transmitter dimensions: 7.3cm x 4cm x 1.8cm

Features:
1. Wireless remote control doorbell (1 x Transmitter， 1 x Receiver)
2. Simple， vivid and no-wire installation design avoids troubles and saves money and doesn’t affect the decoration
3. Remote control range is up to 100 meters in open air
4. Built-in anti-interference design， avoid the interference between users
5. The LED will flash when the doorbell rings
6. Built in double speakers; Make clear and loud sound， especially suitable for homes， offices， factories， hotels， etc.

Packing list:
1 x Transmitter with sticker
1 x Receiver (2 x AA batteries， not included)
1 x 12V 23A battery (included)