12 volts from a lightweight lithium polymer battery that is charged from your USB port. 60 mA units in stock. High current versions available.
Monitor and control anywhere there is Verizon 3G service! 12 volt system is optimized for battery powered applications. 900 Mhz link to iStatus sensors.
Mount your RFID reader within 1000 ft of power and data connection to read in RFID information. 900 MHz relay from RFID to Network data connection allows for fast, easy gathering of RFID data.
PST will soon be offering Remote RFID access control solutions. Everything you need for a complete solution.