Series-mounted staircase light - timer with 10 functions, time range 0.5 - 20 min. can be switched on, switch-off warning (DIN 18015-2), long-term range 60 min., button input up to max. 150mA glow lamp load with electronic overload protection, additional button input galvanically isolated for intercom systems AC/DC 8...240 V, 16 A (16AX) /230 V~