ID Card Reader 125Khz Host Interface Device USB 2.0 USB Powered 3~8cm Sensing Range Features: Suitable for scenarios involving member management and identification, such as clubs, campuses, government, enterprises, social security, fee management, Internet cafes, etc. The communication mode is standard Host Interface Device communication. With full speed USB port,compatible with USB V2.0. Powered by USB universal serial bus interface. Compatible with EM Series, 4001 Series and RF ID cards. Specification: Item Type:Card Reader  Communication method: Standard Host Interface Device communication Interface: Full-speed USB device interface, compatible with USB V2.0 Power supply mode: USB universal serial bus interface power supply Working frequency: 125 KHz Maximum distance of induction: 3~8CM Power consumption: Less than 0.5 W Using Temperature:0~50℃ Using Humidity:50~95Rh Working Pressure:88~106Kpa Size:9.5 x 6 x 1cm / 3.74 x 2.36 x 0.39in Package List: 1 x Main Unit 1 x Cable