... speaker circuit. OTP voice chip ,sound chip, Voice IC--170 seconds OTP voice chip, IC chip, voice chips, sound chip, sound ics Features* ... after stop working or without any action after electrify chip, it will be sleep automatically.*Powerful programmability, can ... , GSM car anti-theft systems, Central lock actuator, TPMS(Tire Pressure Monitor System)* Home security system, Safely, Burglar alarm, ...