LEMONBEST New LED Home Security TV Light & Voice Theft Prevention Device Burglar Intruder Light Deterrent Fake TV Supprt Micro SD card (STV31) simulate the TVs light and voice, to Create the impression someone at home watching TV Built-in light sensor and timer, open and close automatically;Built-in MP3 player and 2.0 speaker You can put any voice into the TF/micro SD card.(SD card is not included) 9V 500mA AC Adaptor included. Do not use other adaptor. 15-piece LED, low electricity consume Voice less than 55 decibels, less than international noise standard.