RGB Flash Light Wireless Doorbell

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…