Features:
Outdoor-bell is power supplied by 4pcs alkaline battery(not included), easy to replace the battery, indoor-bell is power supplied by rechargeable Li-ion battery.
Low power consumption, long standby time for outdoor-bell up to six months.
Big and adjustable speaker, clear voice, can be used as mobile inter phone.
Long wireless distance up to 300m.
Easily installed with 3M tape on the wall.
Outdoor-bell pair with indoor-bell by learning its code, 1 outdoor-bell can paired with N indoor-bells and no interference each other.
Specification:
Indoor-bell:
Power supply: built-in rechargeable Li-ion battery
Transmission distance: 50-100m(without any obstacle)
Work time: 48 hours
Wireless frequency: 467.6375 mhz
Working temperature: -20 ~ +55
Outdoor-bell:
Power supply: 4 x AAA Battery(not included)
Transmission distance: 300m (without any obstacle)
Work time: 6 months
Wireless frequency: 467.6375 mhz
Working temperature: -20 ~ +55
Color: Gold, Silver
