... direct drive speaker circuit. OTP voice chip ,sound chip, Voice IC--170 seconds OTP voice chip, IC chip, voice chips, sound chip, sound ... output*Mute will not take up any memory space.*The voice data re-use saves memory space.*Multiple control modes: ... functions. Applications* Car parking systems, Reverse sensor, Reversing radar, GSM car anti-theft systems, Central lock actuator, TPMS(Tire Pressure ...