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The sticker contains a small RFID chip and an antenna
Mode 1:cellphone carry on WIFI module directly
• Limit switch for mechanical motions in VCR
9V Battery Holder with Wire
3V side will show up on the Hx pin on the 5V side as 5V
SIM808 GPS-GSM-GPRS Module Vibration Sensor Module (801S) The sticker contains a smallIntroduction : GPRS GSM GPS Shield based on the SIM808 GSM GPRS GPS all in one cellular phone module. You can add location tracking, voice, text, SMS and data to your project. This shield fits yourArduinoor , it is easy to use. This shield fits right over your Arduino or compatible. IT is a powerful GSM cellular module (we use the latest SIM808) with integrated GPS. This board based on the latest SIMCOM SIM808 GSM GPS module, it offers cellular GSM