CACAZI 1 Receiver 1 Transmitter EU Plug 300M Remote Home Waterproof LED Indicator Wireless Smart Digital AC Electronic Doorbell
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1.The button supports up to 20PCS, and the receiver supports up to 100pcs.
2.The transmitter without screw chuck design to achieve waterproof and dustproof.
3.Eye-catching backlight flashes when someone pushes the doorbell. Particularly suitable for the elderly, deaf etc.
4.Uses machine-learning to prevent interference from other wireless transmitters.
5.The transmitter USE a 23A12V alkaline battery (not include battery).
6.Receiving distance:300 meters in open area
7.Volume:4 levels 20-80db.
2* Double sided tapes