R16 1 For 1 Smart Wireless Self-Powered Hotel Home Electronic Call Doorbell(UK Plug White) WOWOTO ergonomic ring neck arc

ergonomic ring neck arc

Humanized settings

-USB cable: straw 1pcs

Lens optical size: 1/4"

R16 1 For 1 Smart Wireless Self-Powered Hotel Home Electronic Call Doorbell(UK Plug White) WOWOTO ergonomic ring neck arc1. IP68 waterproof grade, can be exposed to the sun and rain 2. Waterproof, dustproof and shockproof, sturdy and beautiful body 3. The transmitter self generating design, no battery is required, energy saving and environmental protection 4. The transmitter can be pressed around, easy to use 5. 4 level volume adjustable, 58 songs can be replaced 6. Volume range: 0 150dB 7. Power supply mode: transmitter self generating design, receiver in line 8.