The most common 125kHz proximity format is 26-bit (also referred to as the H10301 format). This Schlage Key Fob from Allegion is an alternative and compatible product that compares to HID 1346 ProxKey III with 26-bit H10301 format.
When ordering 26-bit H10301 format credentials, you will need to provide the facility code, a number that must be between 0 and 255. For a 26-bit format, every proximity card will have a unique start serial number programmed into it, between 0 and 65,535.
Bit Format: 26 (125kHz Standard) / H10301
Facility Code Range: 0-255
Number Range: 0-65,535
Schlage 7610 is formerly branded XceedID 7610.
Your facility code and current serial number range can typically be found on the label of the latest box of credentials you have.