CACAZI FA86 Self-Powered Smart Home Wireless Doorbell, UK Plug(Black) Type-Wireless Presenter Designed for both laptop and

Designed for both laptop and desktop

rotating joint lock

the pros and cons can be used

Product material: using aluminum alloy CNC technology

DC12V with good quality

CACAZI FA86 Self-Powered Smart Home Wireless Doorbell, UK Plug(Black) Type-Wireless Presenter Designed for both laptop and1. Buttons generate electricity by themselves, no battery is required, and the generator can be turned into electricity by pressing a finger. 2. Long distance without obstacles with a penetration of 150 meters. 3. Digital circuit design, multiple sets of use without crosstalk, effectively avoiding troubles caused by mutual neighbourhood. 4. 60 music ringtones, let us choose more than one. 5. 5 levels of adjustable volume, as you like. 6. The