Normally open switch-time switch 1000W 4sec-10min. For LED light sources - NO, compact fluorescent lamp (energy saving) - NO, linear fluorescent lamp - NO, 230V bulbs - YES, 230V bulbs - YES, 12V bulbs - electronic transformer - YES, 12V bulbs - toroidal core transformer - YES, column core transformer - NO, devices with an electric motor (fans) - YES