Advante new-arrival colorful mini square wireless doorbell, flashing RGB LED light with audio alert indicators which is easy to rise people's attention. Classroom doorbell ideal for teachers, the elderly, hearing-impaired people. Check out more features as below:
- Colorful doorbell chime is powered by univsal voltage AC100-240V with optional US/EU/AU/BS plug.
- Wireless doorbell push button is no battery powered, it convert movement to electricity when press the bell push button by finger, the lifetime is as long as 20,0000 presses.
- Operating range up to 150 metres at open air, which is applicable for villa, multi-story houses or big property.
- The transmitter is waterproof IP65, better suited to withdraw some tough working environment.
- 32 sounds selectabl…