Technical parameters Work frequency: customized 125KHz/250KHz/375KHz/500KHz Communication interface: USB Extended I/O port: no Power supply: DC 5V (± 5%) Ugbu oriri: <100ma Status indicates: 2 agba ikanam, 1 BUZ Operating temperature: -10℃~ +70℃ The storage temperature: -20℃~ +80℃ Maximum working humidity: 0~95%RH Size: 60×95×11mm Color: black Weight: enweghị nkwurịta okwu akara 135g, tinyere nkwurịta okwu akara 180g