Technical parameters Work frequency: customized 125KHz/250KHz/375KHz/500KHz Communication interface: USB Extended I/O port: no Power supply: DC 5V (±5%) Current consumption: <100ma Status indicates: 2 color LED, 1 BUZ Operating temperature: -10℃~ +70℃ The storage temperature: -20℃~ +80℃ Maximum working humidity: 0~95%RH Size: 60×95×11mm Color: black Weight: without communication line 135g, including communication line 180g