Wireless Doorbell Waterproof Long Distance Clear Voice 2 Way Talk Intercom

Feature: \n 1. Wide Wireless Distance: Wireless doorbell can up to 1000 meters of barrier free distance or 20 to 50 meters of through the wall distance to meet the needs of many scenarios.\n2. Waterproof Design: Wireless intercom doorbell adopts waterproof design, which can be used safely and durably in different seasons and weather.\n3. Long Battery Life: The smart wireless doorbell can work for up to 8 months (outdoor) or 3-5 days (indoor) using the built in 1800mAh lithium ion battery.\n4. Two Way Talk: This doorbell supports two way talk for easy visitor access, thus you know who is visiting your house and talk to them conveniently.\n5. Clear Sound: Includes 1 outdoor doorbell and 1 indoor doorbell, providing wireless large range calls with stable transmission signal for clear sound. \n\nSpecification: \n\nItem Type: Wireless Doorbell\nMaterial: ABS\nWireless Distance: Approx. 1000m/1094yd (Barrier Free), Approx. 20-50m / 65.6-164ft\n (Through the Wall)\nOperating Frequency: 410M: