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Biometric COVID-19 Device

Description

HF-501D Wireless AC Analog Music Doorbell

 

Wireless AC Analog Music Doorbell

 

1. Receiver: 2 AA batteries

2. Transmitter: 12V23A

3. 36 music ringtones available

4. To the bell light flashing tips

5. Distance, open up to 100M or more

6. SMT production process

7. Long-range high-frequency vibration body, penetrating ability

Specification
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