This product is a smart doorbell which is unlike the traditional wireless doorbell. It is simple & easy to operate, has stable transmission signal, fit for apartment, villas, home, hospital and many other places
This product is according to the rules of the frequencies using of our country.It won't produce harmful electromagneti interference.
Features:
1.simple design, elegant, chic style;
2.ultra-low-power design, energy saving and sustainable use
3.long distance remote control, stable signal;
4.28 polyphonic ring tones for optional;
5.Adjustable indoor ring volume
Specification:
Indoor receiver
Voltage Range:AC 110V-220V
Operating temperature:-10 - 55 degree
Outdoor transmitter:
Voltage Range:DC12V 23AAlkaline batteries*1
Operating temperature:-20 - 65 degree
Transmission distance:300 meters in open area
Operating Frequency:433.92MHz±200KHz
Power:0.1W
Volume:25-110dB
Package list:
2 * Indoor receiver (3 * 1.6 inches)
2 * Outdoor transmitter (3.5 * 2.4 inches)
2 * Battery
1 * English user manual
1 * bag * Screw
1 * Double-sided adhesive tape

• ultra-low-power design, energy saving and sustainable use
• Operating temperature:-10 - 55 degree
• Operating temperature:-20 - 65 degree
• Transmission distance:300 meters in open area

ultra-low-power design, energy saving and sustainable useSaful