The dual function time relay can be used for industrial equipment, lighting control, heating element control, motor and fan control, with two delay modes, and the delay range covers from 0.1 seconds to 10 days. GRT8-EC Dual Function Time Delay Relay Function: on Delay or off Delay Relay Voltage Range: AC230V Output: 1x10A(AC1) 1SPDT (1NO1NC) Time scale 0.1s - 10 days divided into 8 ranges, adjustable by Potentiometer. 0.1-1s, 1-10s, 0.1-1min, 1min-10m, 0.1h-1h, 1h-10h, 0.1d-1d, 1d-10day 1-MODULE 18mm, DIN rail mount, convenient installation. Color: White Material: PC Package Contents: 2 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.