Good day. Pressing P36 is the way to turn on / off the factory nodes. If nobody changed the number of emergency lights, then that should change the status (if they are off, turn them on, or vice versa). If that doesn't work, it's because they assigned a different number, for example P02. In the installations that I do, I put the number of the zone to which the sensor belongs, for example, if the light is in zone 03, then turn on by pressing P03, but each case is different, you test with P36 first. Another way is if you have an SMS communicator, in the mobile app you have the option to turn off all nodes. Regards