UHF RFID reader machine has excellent reading and writing abilities,the reading distance is up to 20 meters, which can greatly improve the reading rate. It complies with the ISO18000-6C(EPC G2)or ISO-18000-6B standards, and support Weigand 26/34/42,RJ45,RS232,RS485,WiFi interfaces. GPIO 3 RELAY control point 1 triggers the signal input point. RFID has many applications, parking lot fee charges and automation management, transportation warehousing and logistics, cashier management, attendance checks, supermarket commodities management, document distribution management, safe authentication, library book management, production line automation control, marathon, cycling and other competitions timing, access control systems, to medical equipment management. RFID can connect closely with these applications by wireless communicating.