This is a type of magnet phone that allows for calling by pressing buttons, replacing the conventional magnet phone that uses a handle operation to call the other party's phone.
● Pressing the button sends a call signal (16Hz) over the line.
● While the call signal is being sent, it can be heard and confirmed through the receiver.
● When the call signal is received, it is indicated by an electronic sound and the illumination of the call lamp.
● The volume of the electronic sound can be switched based on settings.
● The volume of the transmitter and receiver can be switched with a switch.
Pressing the monitor button lights up the monitor lamp, allowing for line monitoring.