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: The maximum reading distance of the tag: 0.5m (related to factors such as transmit power, antenna type, tag type and application environment) Maximum distance to write tags: 0.2m (depending on factors such as transmit power, antenna type, tag type and application environment) Operating mode: Active mode Passive mode Answer mode (not recommended) Power interface: DC +5V Operating temperature: -20-55 Communication Interface: USB virtual keyboard storage temperature: -40-85 Power Adapter: USB powered color: White material: plastic Due to different product batches, the appearance may be different, which does not affect use. Package Contents: 2 x UHF Reader 2 x data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.