Product Name: Time Relay with Base; Type: AH3-3; Coil Voltage: 12V DC Contact Type: DPDT; Contact: 5A 250VAC Resistive Load; Time Range: 0-30 seconds Number of Terminals: 8; Mounting Rail Type: DIN Rail; Mounting Hole Diameter: 4mm / 0.157 inch Mounting Hole Distance: 33mm / 1.3 inch (Center to Center); Total Weight: 55 x 40 x 87mm / 2.2 (Approx.) inch x 1.6 inch x 3.4 inch (L x W x H); Color:as Net Weight:354g; Delay on, longer timing. With large transparent time setting knob for easily setting time, 8 pin solder terminals for installation. Time delay relay used in industrial automation system and mechanical equipment to delay component. The relay is a kind of automatic electrical switch, when supply an input value, such as electric, magnetic, signal or thermal, it will transfer the circuit to automatic control and make a sudden change, when the input value decreased to certain degtee, it will resume to the former state and make the controlled circuit return to the former look.