800M Long Distance Outdoor Doorbell Wireless Intercom Door Phone Unlocking Two-Way Intercom 433MHz B yidd1A

Wireless intercom doorbell no wiring no network required built-in wireless signal two-way intercom hands free supports wireless remote unlocking<br> Wireless doorbell supports wireless unlocking and two-way voice intercom<br> Adopting 433MHz public channel, with long wireless distance and strong transmission(about 800-1000 meters in open space, indoor 1-6 floors)<br> 18650 battery powered, low-power consumption, ultra-long standbytime.<br> Wireless unlocking box design, Tap the key to unlock, easy to install and portable size.<br> Colour: White<br> Material: ABS<br> Package Contents:<br> 1 set of Wireless intercom doorbell (different batches, accessories style and color are random)<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.