Circuit design of HA893(III) P/T telephone

SRV05-4-P-T7

Single chip microcomputer STM32L151CCU6

P-HK-0057-01A-Z

One-piece inductor

A telephone is a combination of telephone components that include at least a microphone, a receiver, and a connector, as well as components that are closely related to the transmitter and receiver. The telephone includes a telephone power cord, a telephone line, a wire-receiving switch, a receiver, a sound-increasing button, a microphone, a local number, a ringtone and a hands-free speaker, a memory code key, a memory number, a digital key, a memory removal key, Memory storage button, redial button, work indicator, hands-free button, R button, hands-free microphone, ringtone adjustment switch, P/T switch, hands-free receiving volume adjustment knob. The figure shows the circuit design of the HA893(III) P/T type telephone.