UHF Identification Card Reader 902MHz to 928MHz Small Desktop USB UHF Identification Card Reader Writer for Access Control Item Type: UHF Identification Card Readerer Material: ABS Model: W17C-USB Size: Approx. 105 x 65 x 15mm / 4.1 x 2.6 x 0.6in  Frequency Hopping: 920-925MHz, 902-928MHz Tag Protocol: For ISO18000-6C (EPC GEN2) Frequency Hopping Mode: FHSS or Fixed Frequency, Adjustable via Software Antenna Parameters: 2dBi Circularly Polarized Antenna (Built-in) Output Power: 12.5dBm-26dBm (Adjustable via Software) Read Distance: Maximum Reading Distance for Tags: 0.5m / 1.64ft (Depends on Transmit Power, Antenna Type, Tag Type, and Application Environment) Write Distance: Maximum Writing Distance for Tags: 0.2m / 0.66ft (Depends on Transmit Power, Antenna Type, Tag Type, and Application Environment) Operating Modes: Active Mode, Passive Mode, Response Mode (Not Recommended) Power Input: DC 5V Communication Interface: USB Virtual Keyboard Operating Temperature: -20°C-55°C / -4°F-131°F Storage Temperature: -40°C-85°C / -40°F-185°F Power Adapter: USB Powered RS-232 Signal Line: Equipped Power Line: Equipped Development Kit: SDK Provided