Time Delay Relays . Time - Delay Relay . Relays are switches that are controlled by a circuit. Relays , in essence, send messages that tell something to start. When a car is started, the ignition only indirectly interacts with the battery of the car because a relay is sending the signal that tells the car to start. Specifications: Contact Load: Low Power Theory: Time Relay Model Number : DH48S-S Usage: General Purpose is customized : Yes Protect Feature: Sealed Voltage: 200/220/240V AC Power expend: DC1.0W AC1.0VA Control output: 5A220VAC Insulation Resistance : DC500V 100M Dielectric Strength : BCC1500VAC BOC1000VAC Operating Temperature: -10~50 celsius degree Humanity: 35%~85% Installing Holing Size : 45 * 45 mm Time range : 0.1S~99H Package Includes: 1 x DH48S-S Time Delay Relay