Self-Powered Technology: No batteries required for the transmitter; generates power mechanically when pressed.

38 Selectable Ringtones: Offers a variety of musical/chime options. Adjustable Volume: Customizable volume levels to suit user preferences.

Volume adjustment: 4 volume levels.

Outdoor waterproof: It can be installed outside the door without worrying about being damaged by rain.

Long Range: Supports up to 150 meters in open areas (433.92MHz frequency).

Technical parameters:

1. US plug, UK plug, EU plug optional

2.Operating voltage: AC 100-230V

3.Power consumption: 0.25W

4. Wireless frequency: 433 MHz

5.Operating temperature: -10°C~+45°C

6.Ringtone volume:≥50dB/lm

7.Wireless distance: 150 meters (open space)

8.Receiversize:L78xW54xH45-63mm

9.Transmitter:no need battery

10.Transmitter size:L60xW40xH20mm