Specifications:

Working voltage: 200-240V
Working current: ≤120mA
Power: 2W
Power charger: EU plug/US  lug  
Music: 36 music for option
Sound: 25-80dB (4 grade volumes)
Remote control distance: 100m (in open air)
Work voltage: 12V (Battery Model: 23A 12V, not included)
Work current: ≤15mA(20 times a day by calculating, a high quality)
LED indicator: press the send button, LED indicator light will flash, emitter work and the receiver receive the order and then send out the beautiful music reminded you the VIP visit, the Blu-ray LED of the receiver will regular flash along with the music
Temperature: -10 -50 ℃

Product dimensions:

Receiver: 9.5 × 6.0 × 3.4cm/3.7×2.4×1.3in
Transmitter: 8.4 × 6 × 2.3cm/3.3×2.4×0.9in
Receiver: 72g
Transmitter: 37g

Package List:

1 * Wireless Electronic Doorbell Receiver
1 * Transmitter
2 * screws
1 * User Manual(English)