Delay Timer Module Adjustable Time Delay SPDT (Form “C”) Relay Operating Modes: One-Shot or Repeat 12 to 24 Volt D.C. Operation The ELK-960 Delay Timer is designed to be an economical and flexible solution for any generalpurpose timer application. The unit can be configured for use on 12 to 24 Volt D.C. systems, with positive or negative trigger logic. Positive triggers can be as low as 4.5Volts.