Communication mode: Standard hid communication; Interface: full speed USB device interface, compatible with USB v2.0 Communication speed:106Kbit /s Serial port baud rate :9600Kbit /s Power supply :DC 5V (+/- 5%) Power supply mode: USB universal serial bus interface power supply; Working frequency: 125 kHz; Sensing distance: 3-8cm; Support card types: EM Series, 4001 series and compatible RF ID card; Power consumption: less than 0.5 W (<100mA); Dimension: 110 × 80× 30 mm Operating environment: temperature: 0-50 ℃, humidity: 50-95rh, air pressure: 88-106kpa. Scope of application Occasions involving member management and identity recognition, such as clubs, campuses, enterprises, social security, fee management, Internet cafes, etc. https://elecena.pl/product/22626183/usb-rfid-card-reader-jt308 2023-02-23 https://elecena.pl/product/22626183/usb-rfid-card-reader-jt308 2025-10-28