Chip: EM4450/EM4550 Working frequency: 125KHz/134.2KHz Capacity: 1Kbit 1 KBit of EEPROM organized in 32 words of 32 bits 32 bit Device Serial Number (Read Only Laser ROM) 32 bit Device Identification (Read Only Laser ROM) Working mode: R/W Read range: 1~10cm Working temperature: -40°C~+85°C Storage temperature: -55°C~+125°C R/W life: 100,000 times Storage: 10 years Material: PVC/ABS/PET/PETG/PS/Paper, 0.13mm copper wire Size: …