CACAZI M20 1 For 3 Split Type Door Opening Sensor Reminder Smart Wireless Doorbell Alarm, Style: US Plug(Black)

1. Material: ABS, electronic components2. Features: long transmission distance, built-in 52 music ringtones, 5-level volume adjustment, LED indicator light, strong penetrating ability3. Applicable range: 300 meters4. Music: 52 pieces of music5. Volume: 5 levels of volume6. Power supply mode: power supply7. Receiver battery: plug directly into the power supply8. Transmitter battery: 12V 23A battery x 1 (delivery without battery)9. Installation method: double-sided tape fixed / screw fixed10. Waterproof grade: IP4411. The receiver has an indicator light, and the bell light is on12. Strong penetrating ability to meet household needs13. The AB door function can be set to distinguish the signals from different sensors and set different sounds14. The waterproof design of the transmitter can prevent the intrusion of rainwater, safe and durable15. Product Dimensions: Transmitter: 9 x 5.6 x 2 cm, Receiver: 6.4 x 3.9 x 1.45 cm