Description
Schlage Primus S & SX Master key system keys.
Most typical suite prefixes are: 1N, 1M, 2N, 2M, 3N, 3M, 4N, 4M, 5N, 5M, 6N, 6M, 7N, 7M, 8N, 8M, 9N, 9M
Full suite number example: 2N557
Just enter the suite number and the key on that suite required IE GMK for the grand master, or D23 for key 23 on that system.
