Simplex 252-017 — switch key, Simplex factory part number.
Keyed switches on fire alarm equipment restrict operation to trained staff, which means the key is a consumable that walks off, gets bent in a pocket or never makes it back into the panel pouch after a test. This listing is the Simplex part number itself, so a technician who already knows the key number recorded for the equipment can reorder the matching key.
- Simplex part number 252-017, described in the trade as a switch key
- Supplied as a key only — no lock, cylinder, switch or escutcheon
We could not find Simplex or Johnson Controls literature that names the switches or panels this key number operates, so no compatibility is claimed here. Order it only when 252-017 is the number specified for your equipment. Other Simplex keys carry their own numbers and are not equivalent — 252-019 is the "B" key for pull stations, and 454-101 is the key for the Remote Command Unit and LCD annunciator.
