Time/Astro/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: Interactive WTP-4408 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-5527 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

WTP-4408 Time/Astro/Photo Controller

WTP-4408
Time/Astro/Photo Controller