Home › Products › Relay Controllers

WTP-4408 Timer/Photo Controller

  • The WTP-4408 Timer/Photo Controller switches 8 output groups of Douglas 2-wire relays or relay scanners in response to internally programmed time/astro settings or externally measured light levels. Each output's response is independently set
  • Time-of-day or astro (position of the sun) settings are programmed using the LCD display and membrane keypad. For an interactive programming demonstration go to the Interactive WTP-4408 Timer/Photo Controller Tutorial
  • Unique time schedules can be set for different areas: for example, OFF sweeps at different times for office areas, corridors, lobbies, etc. Astronomic (position of sun) schedules can be used to switch exterior lights ON and OFF automatically
  • As an option, ambient light levels can be measured with a Douglas WPS-5527K Outdoor Daylight Sensor connected to the Controller's inputs, as shown
  • Time-based control in conjunction with astronomic and/or light level control offers an ideal combination of convenience and energy savings