The 3405ZIC Key is used for the MK secret switch, this is sometimes referred to as a fish key. Please see the seperate picture for the style of switch this...
Crabtree style emergency lighting test key switch. This key is designed to work with the Crabtree range of secret switch emergency lighting test switches.
Contains:-2 x 3405Z - MK2 X ELKEY - (Crabtree)2 X F9099 - Grid Key (MEM)