Applications: Suitable for applications where the function and time requirements are known Time switch, can be used for pump decay time after heater off, switching fans Functional characteristics: Time delay function GRT8-B Supports wide voltage range: AC230V Output contact: 1SPDT(1NO1NC) or 2SPDT(2NO2NC) Time scale 0.1s - 10 days divided into 10 ranges, time setting by potentiometer. 0.1-1s, 1-10s, 6-60s, 1-10min, 6-60min, 1-10hr, 0.1-1day, 1-10day, only ON, only OFF The relay status is indicated by a LED. 1 MODULE 18mm, DIN rail. Size: 90 x 18 x 64 mm Material: PC Color: white Package Contents: 4 x Time Delay Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.