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K4642

The K4642 Emergency Test Module is used as part of the MLS Digital System to provide an emergency test facility for luminaires which are not connected through Connection Centre. It provides a maintained live supply to emergency luminaires.

When an emergency test is required, the user operates an Emergency Test Keyswitch, connected to the appropriate input on the MLS Bus Power Supply, which causes the Module to disconnect the maintained live supply causing emergency luminaires to go into emergency mode.

A walk test of the installation can then be made to check that they are operating correctly and a log to be recorded.

Emergency mode is active for as long as the keyswitch remains closed and for a period of up to 30 seconds after the keyswitch is turned off.

In the event of an actual power failure all emergency luminaires will enter emergency mode as normal
 

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