Staircase light timer with switch-off pre-warning. Standby loss only 0.7 watts. Contact switching in zero crossing to protect the contacts and lamps. In particular, this extends the service life of energy-saving lamps. By using a bistable relay, there is no coil power loss and no heating thereby even when the relay is switched on. After installation, wait for the automatic short synchronization before connecting the switched consumer to the mains. Control-, Supply and switching voltage 230V Glow lamp current up to 50mA depending on the ignition voltage of the glow lamps. Precise time setting 1 to 12 minutes with minute scale. Separate continuous light switch with the large rotary switch. For 3-wire circuits with roof floor lighting, cannot be switched on. Only for retrofitting existing systems. After a power failure, the light is switched on again if the time has not yet been completed. When the switch-off pre-warning is activated, the lighting flickers approx. 30 seconds before the ti