Product Name : Time Relay w Base;Type : AH3-3;Coil Voltage : 12V DC Contact Type : DPDT;Contact : 5A 250VAC Resistive Load;Time Range : 0- Number of Terminals : 8;Mount Rail Type : DIN Rail;Mount Hole Diameter : 4mm/ 0.157 inch Mount Hole Distance : 33mm/ 1.3 inch(Center to Center);Total Size (.) : 55 x 40 x 87mm/ 2.2 inch x 1.6 inch x 3.4 inch(L x W x H);Color : As Picture Shown Net Weight : 472g Power on delay, plus timing. With large transparent time setting knob for setting time easily, 8 pin solder terminal for installation. Time Delay Relay used in industrial automation system and mechanical equipment to delay component. Relay is a kind of automatil electric switch, when supply with an input value, like electric, magnetic, light or thermal signal, it wall transfer the controlled circuit automatically and make an abrupt change, when the input value decreased to certain degtee, it resume to former state and make the controlled circuit back to the former stare. Features LED indicator show power and output status. Package Content: 4 x Time Relay 4 x Base Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.