Zixyqol Intercom Doorbell, Voice intercom Doorbell Intercom Doorbells Long Distance Voice Doorbell IP54 Waterproof Voice Intercom Doorbells for Home Hotel

Specification: Item Type: Wireless Intercom DoorbellMaterial: ABSOutdoor Doorbell:Battery Type: Rechargeable lithium battery 2000mAhx2 (built in) Working Temperature: -20~55°C Wireless Distance: 1000m/3280ft (barrier free) / 20-50m/65-164ft (blocked)Wireless Frequency: 410~490MHzWorking Hours: More than 8 months Waterproof: IP54 Product Size: Approx. 121.5x61.5x313.mm/4.78x2.42x12.32inInterior Doorbell:Battery Type: Rechargeable lithium battery 2000mAhx2 (built in) Working Temperature: -20~55°C Wireless Distance: 1000m (barrier free) / 20-50m (blocked) Wireless Frequency: 410~490MHzWorking Hours: about one week Waterproof Grade: N/A Product Size: Approx. 115x55x20mm/4.53x2.17x0.79in Package List:1 x Outdoor Unit1 x Indoor Unit1 x Charging Base1 x Usb Cable1 x Screwdriver1 x Sticker1 x Instruction Manual