... .components:PCB,speaker,plastic box,battery house,IC,microphone,AA or AAA battery 5.power supply:AG13,AG10,AG3 button cell,AA or AAA ... battery 6.speaker material:ABS(GREEN) 7 ... lose even if power off. 9.switch:slip switch,push button,light,light sensor,vibration,timing,tempreture,PIR, IR activated10.Application ...