voice recorder camera recorder gsm mms reply for photo product supports the a the GSM:850/900/1800/1900 network and GPRS standard quad-band, and can switch seamlessly between different networks. Power on: Open the back cover, the SIM card inserted into the card holder automatically boot until the indicator goes off, you can use Monitoring to detect: normal boot, when necessary monitoring tools can dial the dial is turned to hear the status of the location around 10 meters Voice Callback:Phone open: with fixed-line or mobile phone SIM card number to get through the alarm hear ambient sound 2-3 seconds, hang up that set successfully, the default alarm status.(35 decibels of sound when the alarm within 4 meters, the alarm will automatically dial the number set). Supports GSM quad-band network and GPRS, New Wireless Spy GSM SIM Phone Device Surveillance Ear Bug with Spy DVR Video Camera Precise positioning (This function with GPRS and MM Scard) Recorded as Edit the text "222" sent to this product
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