Dual function time relay can be used for industrial equipment, lighting control, heating elementscontrol, motor and fan control, with two delay modes, and the delay range covers 0.1 seconds to 10days. GRT8-EC Dual-function Time Relay Function: on Delay or off Delay Timer Relay Voltage Range: AC230V Output: 1x10A(AC1) 1SPDT (1NO1NC) Time scale 0.1 s - 10 days divided into 8 ranges, setting by Potentionmeter. 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 mounting, convenient install. Color: White Material: PC Package Contents: 8 x Timer 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.