Wireless Intercom Doorbell,1000ft Range Two-Way Communication System for Home Use,Doorbell Intercom 4 Volume Levels,Rechargeable Battery,Waterproof,Doorbells for Home Classroom (Black)

【Wireless Doorbell Intercom】This device can be utilized as both a doorbell and an intercom.One Outside unit will also be paired with a couple of indoor units, and the indoor units will ring concurrently when the Outside unit is pressed; the indoor units can communicate with each other.
【Long Range and Anti-interference】 The transmission distance of the intercom doorbell is 1000ft in open area. At the same time, it adopts encrypted call design, does not crosstalk, avoids signal interference.
【Easy To Use】These wireless intercom doorbells are easy to setup. No drilling or wiring is required; simply attach the Outside unit to the out of doors of the door and place the inner unit inside.
【Waterproof Intercom Doorbell】These doorbells are made of prime quality and durable material. It is IP44 waterproof and can be utilized in windy and snowy days.Outside working temperature -4℉~122℉(-20℃~50℃).
【Long Battery Life】The doorbell will also be charged via a Type-C or charging dock, with a standby time of 3-7 days for the indoor unit and 3-6 months for the Outside unit. In addition, the doorbell has 4 levels of volume adjustment for quite a few scenarios.
【Customer Reinforce】When you’ve got any problem when you get the product, please contact us, we can solve the problem for you within 24 hours.