This is a RFID transponder which is coordinated with the lock (125 kHz frequency range). The range is approx. 1-1/8" through wood or glass.
Up to 49 different keys per lock!
PS Locks is no longer carried by our company, if you are interested in the PS Locks line of products, please contact our Security Hardware Experts to learn about alternative brands and products we can offer you.
Contact us to review your product needs!