Controls & Automation
WattStopper RT-200 astronomical time switch
By Anthony Capkun
WattStopper’s RT-200 astronomical time switch is user programmable; it turns lights or other electrical loads On/Off relative to dusk or dawn, or at selected times of day. This is such switch produced by WattStopper, and was developed to give homeowners a wider range of lighting control options. It includes a bright organic LED (OLED) display, hidden programming buttons and a large On/Off control button. It can be programmed with up to eight control schedules to activate lighting at different times on one or more days of the week. After entering the local time, date, latitude and longitude, users navigate through simple menus to establish control schedules.