1. Material: ABS, electronic components
2. Features: long transmission distance, built-in 38 music ringtones, 4-level volume adjustment, LED indicator light, strong penetrating ability
3. Applicable range: 300 meters
4. Music: 38 pieces of music
5. Volume: 4 levels of volume
6. Power supply mode: power supply
7. Receiver battery: plug directly into the power supply
8. Transmitter battery: 12V 23A battery x 1 (delivery without battery)
9. Installation method: double-sided tape fixed / screw fixed
10. Waterproof grade: IP44
11. The receiver has an indicator light, and the bell light is on
12. Strong penetrating ability to meet household needs
13. Long-distance barrier-free 300-meter penetration
14. The waterproof design of the transmitter can prevent the intrusion of rainwater, safe and durable
15. Product Dimensions: Transmitter: 7.6 x 4.3 x 2.2 cm, Receiver: 9.0 x 5.5 x 2.5 cm