Electrical characteristics Internal chip: លេខកូដ NXP U 7, NXP U CODE 7m Communication protocol: ថ្នាក់ EPC 1 ចាងផាប 2, ISO 18000-6C compliant Capacity: លេខកូដ NXP U 7: 128 ប៊ីត EPC, no user memory NXP U CODE 7m: 128 ប៊ីត EPC, 32 bits user memory Operating frequency: 902~928MHz Reading distance: អ្នកអានថេរ: 87× ១៧ ម។: 7m (22 ឈ្នួលរេប្ដា) 60× 20 មម: 5.5m (18 ឈ្នួលរេប្ដា) Handheld …