125kHz RFID Tag with HT4168 Chip, EM4100 Compatible Access Control Token

Compact and reliable, this 125kHz RFID tag uses the HT4168 chip for consistent signal transmission and is compatible with standard EM4100 proximity readers, making it a straightforward replacement for plastic badges. Coin-sized and housed in a rugged ABS shell, the token resists drops and moisture so it stands up to daily carry on a keyring or lanyard. The internal coil is engineered for instant proximity scanning, triggering authorization as it’s held near a sensor, which keeps entry smooth in high-traffic locations like apartment buildings, gyms, and offices. A reinforced steel ring hole simplifies attachment to keys or bags, offering a practical, low-maintenance access control option for everyday use.