Specifications:
Color: Silver
Working Temperature: -20 to 55
Wireless Distance: Up to 300M without any obstacles (50-100M with obstacles)
Frequency: 467.6375MHZ
Power Requirements: Rechargeable Li-ion battery for indoor bell; 4 x 1.5V AAA battery for outdoor bell (not included)
IP Level: Not applicable
Size: 100x60x14.8mm

Features:
1. Extended wireless range of up to 300 meters in an open area.
2. Energy efficient with a long standby period of up to six months.
3. The device features a sizable and adjustable speaker that produces clear voice sound and can additionally serve as a mobile intercom.
4. Easy and hassle-free installation using the included double-sided adhesive.
5. The doorbell operates in a temperature range of -20 to 55, suitable for various climates.

Package Include:
1 x Indoor-bell
1 x Outdoor-bell
1 x USB Cable
1 x Screw Driver
2 x Double-sided Adhesive
1 x User Manual