cy-sc1 station checkpoint Read Distance Up To 5 CM product specifications Product Features waterproof design ease of installation wear resistant no battery required specifications frequency bandoperating frequencytransmission modeRead distanceread timesupported ReaderOperating TemperatureOperating Humidityenvironmental protectionIP RatingColorMaterialsizeWeightLow Frequency (LF)125 KHzpassive (battery-free)2 ~ 5 CM< 2 secguard tour RFID reader (CY-101Z/k2)-25°C ~ 60°C10% ~ 90% (non-condensing)waterproof, dustproofIP 68black, WhiteABS40 x 40 x 4.5 MM3 g