1. Product Name: wireless door bell
2. Size: Transmitter: 8.6*8.6*3CM
Receiver: 9*7*2.8CM
3. Color: white
4. Receiver working voltage: DC 3V DC
5. Power: ≦ 2W
6. Working frequency: 315MHZ
7. Remote control/receiving distance: ≧120m (open area)
8. Power mode: 3V 2AA battery
9. Transmitter operating frequency: 315MHZ
10. Transmitter operating voltage: 12V (battery model: 23A 12V)
11. Transmitter operating current: ≦15mA (calculated 20 times per day, one high-quality battery can be used for one year)
12. Product features: 16 chords 38 ringtones, LED indicators, volume adjustable