No battery required, new in power supply:
Indoor unit: AC100V~240V 50/60Hz (mains power)
Outdoor unit: There is no need for a separate power supply, when the button is pressed, it generates kinetic energy, so it uses it to send the signal to the indoor unit.
Operation:
Just lightly press the button and the integrated generator generates enough energy to send a pulse from the transmitter to the receiver, which starts ringing. The device operates at a frequency of 433.92 MHz, with a power of 10 dBm.
Range:
100 meters outside.
Ringtone:
You can choose from 36 types of ringtones, which you can use with a volume of 0 - 60dB.
Startup:
Plug the RSH® DB002 into your socket, stick the doorbell's outdoor unit to the door - and you have done!
Neither the indoor nor the outdoor unit requires batteries, batteries, or cables!
