HOTEL LOCK MANAGEMENT SYSTEM, Hotel Lock Key Switch PR-4345 PCP 1 USB Port for communication and power supply Self-detect light Compatible with OS Microsoft Windows 2000 2003 XPVISTA Wireless Data collector communicate port built-in Supports Magnetic stripe card programming PR-4346 IDP Capacity 8K byte, organized in 16 sectors with 4 blocks of 16 bytes each (one block consists of 16 bytes) Frequency 35MHZ Read & write distance 2.5-10cm Read & write time1-2 ms Data retention over 10 years Write endurance over 100, 000 cycles Operating temperature -20C to 80CHotel Lock Key Switch PR-4348 ESS Color White MERITS Automatic time setup (optional) Over Voltage & Current protection Executive royal lookCent percent perfect performance Strong fire proof polycarbonate material Energy saver switch