Staircase light timer for distribution board installation, time sequence via synchronous motor drive, therefore maximum reliability and accuracy, time range 1-7 minutes, times can be read directly, adjustable in steps of 15 seconds to 15 seconds, always the same connection as pre-selector switch for 3- and 4-wire connection, switch: continuous light-minute light, can be switched on again after approx. 30 seconds over the entire setting range, 230 V, 50 Hz, switching capacity: 16 A, 230 V~, for 3-wire connection, cannot be switched on again, connection of storage lighting possible.