... quality!HUA 125khz RFID keys HUA-CP1Electronic chip sealed in the PVC case,waterproof and shock-resist,easy to install, ... material walls; Button, circle, keyring, nail and cylinder-shaped cards used as guard tour checkpoints. These can be installed either ... incidents. Its working frequency is 125KHz..track metal parts, components in chemical baths, injected molded plastics, palettes, or containers, our ...