Emergency lighting key switches, also known as secret key switches or grid switches, are designed to allow the testing of emergency lighting easily whilst ensuring non-authorized personnel cannot tamper with the light switch.
This is one test fish key for isolating the power to the emergency lighting in order to test it's ability to function correctly in an emergency.
Ideal for fire wardens, caretakers, site managers, electricians, or security personnel.
This design of key is known to fit the following MK switches, but will also fit many others on the market:
- K4894
- K4898
- K4898EL
- K4917
- K4917EL
- K4918
