Material: ABS Size: 73*39mm Operating Frequency: ID(125KHz) or IC(13.56Mhz) Compatible Card: ID(TK4100/EM4100/EM4200/EM4305/T5577) or IC(Fudan F08/Mifare 1K) Currency:<10UA, up to 200MA of working Voltage: 6V Power Supply: AA Battery*4 Working Temperature: -20℃-70℃ Working Humidity:<80% Alarm Function: ①Low voltage(<4.5V) ② Forget to close door Application:Cabinet in swimming pool, gym, water park, sauna center, bath center, supermarket, school. hotel