Wireless Door Sensor Alarm, Door Window Entry Alert Security Magnetic Sensor,Home Security Systems Electrical Door Magnetic Chimes,Refrigerator Door Switch Reminder DIY Voice

This product is small and exquisite, easy to carry, beautiful sound. Smart door magnetic induction, intelligent trigger,no need to operate manually,applied in Door,Refrigerator,door and window security alarm Child safety security alarm,Home safety,Anti-theft alarm and other occasions.
Small and exquisite, high quality MP3 voice playback, beautiful sound.
Eight-level volume for option.
Door magnetic induction triggers to play voice; induction distance is 2 cm.
Adopt WT2003 voice chip; welcome mode and alarm mode are alternative(trigger to play the first voice regularly).
Standard 32Mbit SPI-FLASH
A button is to choose the next one and switch between A and B mode; B button is to adjust volume and switch mode between trigger with interruption and trigger without interruption.
A mode is all loop play; B mode is single playback.
Power-off memory mode; default mode is B mode, trigger with interruption.
Through PC software, direct to update voice by USB cable connected to computer.
Adopt 3 AAA batteries(not included) or USB to supply power, choosing only one power supply mode. When download voice, take out the batteries first, then connect with computer to replace voice.
Built-in 8 ohm 1w speaker.