Blowout Sale! Save 56% on the Wireless Intercom Doorbells, Adv-one Portable Ring Bells with 1 Push Button Transmitter and 3 Receivers, No Wiring Required, 600-feet Operating Loud Volume Door Chime Alert Kits (Silver) by Adv-one at N Online Agency. MPN: ZHGZ. Hurry! Limited time offer. Offer valid only while supplies last. Features: 1.To better understand our product and make it work for you, please read user manual before installation. And use our product as described in this manual. 2.When you switch the talk between the push button and receiver, keep the distance for more than 2M. Or signal interference will occur and both may screech. 3.Most of the doorbell in the market are directly plugged in the power supply. The reason why we choose the rechargeable Li-ion battery is users can carry the indoor bell to
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