This Harmony RE22 modular multi function timer can be set between 1 seconds and 300 hours.This modular multi function timing relay is ideal for providing timing control in automation systems such as automatic door opening, alarm, lighting in toilets and car park barriers.It has one of market slimmest form-factors with 22.5mm width, allowing for a flexible and easy installation on DIN rail, using the same space as any modular 2-pole DIN device.multi function timer for a simple integration in hard-wired logic schematics, ideal for refurbishment of old installations without using a PLC.