Staircase light timers control staircase and hallway lighting. They switch off manually switched on lights after a preset time. The RTZ series offers a variety of functions and flexible control inputs. The device can be switched on and off using the connected buttons. There are many different operating modes to choose from. Properties: Time delay adjustable over a wide range from 0.5 min to 12 min, LEDs to display the supply voltage and the position of the output relay, quiet normally open contact for 250 V AC and continuous currents of 10 A (devices connected in series) or 16 A (devices not connected in series), control input with overload protection and a max. incandescent lamp load of 100 mA, operating voltage 230 V AC, automatic 3-/4-wire detection, screw terminal connections also for large cross-sections, compact design, mounting type: quick attachment to mounting rail, installation position as desired, areas of application: use for all rooms in which energy savings are to be achieved by automatically switching off the lighting, e.g. stairwells, corridors or storage rooms in private or commercial buildings. Notes: For continuous currents above 10 A, a distance of at least 5 mm must be provided between the devices.