Ths DICON 330L smoke has been discontinued and nothing in the market will connect to it. YOU HAVE TO REPLACE THEM ALL. The direct sub for the 330L is the SA360, but they all have to be SA360's, cannot mix SA360's with 330L's. As of 2003 DICON has been out of business about 10 years. The warranty on the units is 10 years. Your units are dead and should be replaced as a normal course of business These units will mount to the existing base of the 330L. These are 120V units. Connect with COS2010,470L, 670L/770L DUAL IONIZATION CHAMBER If you replace them all,look at the SA379 - 120VAC with 9VDC Batt

SA360 Datasheet:
SA360 ARCH SPEC