800 SD Selec Delay Timer has a 2-time range and 50 /100msec change over time. The timer has a DIN Rail Mount type mounting style which makes it unique. It is made up of the finest quality material, which makes it accurate and durable. The product has 8 strong fixing nails, which makes it easy to install. We offer this 800 SD Selec Delay Timer at an affordable rate to our customers.