AK-01 Electronic Guest-Saluting Wireless Doorbell(White) Type-Google Spare Parts the beep sound and flashes

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AK-01 Electronic Guest-Saluting Wireless Doorbell(White) Type-Google Spare Parts the beep sound and flashes1. Apply the function of automatic light sensitivity. Easy usage, energy saving, and high sensitivity make it meet the need of marker more and closer to consumersa?? lives. Ita?? s suitable for the dwelling houses, shop, offices, factories and so on. It not only brings you convenience, but also give you the unexpected happiness and safety. 2. Powered by 3 x AA1. 5V batteries(not included) 3. Light control distance is 3 7m 4. Size Approx: 8. 2 x 4. 5 x