Time Delay Relay, power supply included. Viking's model TDR-1 is a time delay relay device designed to be easily configured to fit a wide variety of applications. The TDR-1 has two different modes of operation: 1) In the Time Delay Mode, the TDR-1 can be programmed to produce one of 8 closure times. The Trigger 1 input can be programmed to accept either a dry contact closure or positive/negative going logic level voltage. 2) The Delay on Operate mode delays an input trigger by a programmed interval. Eight delay times are available, from 1 to 30 seconds. Applications Controlled closure times Delayed closures Convert closures between N/O and N/C Features 1 Double Pole, Double Throw relay output 8 selectable closure times DIP switch programming Accepts positive or negative going logic level voltage or contact closure Selectable time delay Screw terminal connections LED relay status indicator.