Air Electric Switch, 10 PSI, Normally Closed (A-dec® #044.159.00) Activated at 10 PSI or 25 PSI On/off control of up to 120V, 5 amp 15/32-32 thread with nut 125 PSI max Replaces 24V Volt/150 Watt bulbs in older 6300 lights A-dec® is a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products.