Technical Parameters RF Specifications RF Air Protocol: EPC Global Class 1 Gen2, ISO18000-6C Operating Frequency: 866-868F-i60T Fingerprint Time Attendance Device(EU)/902-928F-i60T Fingerprint Time Attendance Device(US)/920-925F-i60T Fingerprint Time Attendance Device(CN) Environment Compatibility: Metal and non-metallic Read Range On-Metal(2W ERP): Up to 4m/13.1 ft Read Range Off-Metal(2W ERP): Up to 4m/13.1 ft Polarization: Linear IC Type: Alien H3 Memory Configuration: EPC 96bit/TID 64bit/User 512bit Mechanical Sepcifications Tag Materials: Ceramic tag embed in metal Surface Materials: …