... Co., Ltd. provide you with high quality products and good service.Small Size and Waterproof RFID Guard Patrol Probe GS-5000A&Guard ... read 20,000 in 1 minute. No button, automatic card reader, convenient and practical.5. Sound, LED lighting, vibration triple prompted reader ... charge, for readers up to more than 500,000times. 8.Card reader technology: Switzerland EM sensor reader technology.9. 4M Flash ...