JPH0226834U

JPH0226834U -

Info

Publication number: JPH0226834U
Application number: JP1988106050U
Authority: JP
Priority date: 1988-08-10
Filing date: 1988-08-10
Publication date: 1990-02-21

Description

[Brief explanation of drawings]

図面は、本考案に係るワイヤレスインターホン
子器の回路図。２……送受信回路、２４……スピーカ、２６…
…コールＳＷ、２８……マイク、３０……切替回
路、３２……電源電池、３４……電圧レベル検出
回路。 The drawing is a circuit diagram of a wireless intercom slave device according to the present invention. 2...Transmission/reception circuit, 24...Speaker, 26...
...Call SW, 28...Microphone, 30...Switching circuit, 32...Power battery, 34...Voltage level detection circuit.

Claims

[Claims for Utility Model Registration] A microphone, a speaker, a power supply battery, a first call sound generation circuit that outputs a signal for generating a call sound, and a device that wirelessly receives a transmission signal from a parent unit and a transmitter/receiver circuit that supplies audio signals to a speaker and wirelessly transmits audio signals from the microphone and the call tone generation circuit to a parent device; and a signal from the microphone and the first call tone generation circuit. A wireless intercom slave device comprising: a call SW that outputs to the transmitting/receiving circuit; a second call sound generation circuit that outputs a signal that generates a call sound different from that of the call sound generation circuit; and a voltage level of the power supply battery. a voltage level detection circuit that outputs a detection signal when the voltage level is below a certain value, and a signal from the first and second call tone generation circuits depending on the presence or absence of this detection circuit, and transmits and receives the signal. A wireless intercom slave device characterized by comprising: a switching circuit for supplying a signal to the circuit;