A Timer Relay is a combination of an electromechanical output relay and a control circuit . ... Time delay relays are initiated or triggered by one of two methods: Application of input voltage/auxiliary supply will either initiate the unit or make it ready to initiate when a trigger signal is applied. Features: AH3-3 8 Pin 10 Seconds 0-10S Power On AH3-3 Timer Relay AH3-3 Min Multi Range Time Delay Relay AH3-3 Timer Relay Electronic Type Adjustable Release Delay Time Relay 8 Pins Specifications: Model Name/Number AH3-3 Voltage 24 VAC / 110 VAC / 220 VAC Display Type Analog Part Number AH3-3 I Deal In New Only Brand CKC Current 5A 250VAC TIME RANGE 10S / 30S / 60S