The ELPA 8 staircase time switch from Theben is a classic amongst staircase time switches: Over 30 million ELPA 8 staircase time switches have been sold to date. Theben staircase time switches are available in DIN rail or flush-mounted versions. Whichever type you choose, our staircase time switches have a multi-voltage input, the runtime is variable between 30 seconds and 20 minutes, and many models are fitted with an advance switch-off warning.Overview of Theben staircase time switches: