Label Agreement: ISO18000-6C (EPC GEN2) Frequency hopping method: Broad spectrum frequency hopping (FHSS) or fixed frequency that can be set by software Antenna parameters: 2dBi circular polarization antenna (built-in) Output Power: 12.5dBm~26dBm (software adjustable) Reading distance: Up to 0.5m (varies based on transmit power, antenna type, tag type, and environment) Writing distance: Up to 0.2m (varies based on transmit power, antenna type, tag type, and environment) Operating modes: Active mode, Passive mode, Answer mode (not recommended) Power interface: DC +5V Operating temperature: -20C to 55C Communication Interface: USB virtual keyboard Storage temperature: -40C to 85C Power source: USB powered Color: White Material: Plastic Note: Product appearance may vary slightly between batches; this does not affect functionality Package Contents: 1 x UHF Reader, 1 x data cable Item weight: [Value] kg Product dimensions: [Length] x [Width] x [Height] cm Note: Lighting and monitor settings may cause slight color variations. Measurement tolerance: 1-3 cm