Light Switch has built-in light sensor.
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Press Release Summary:
WS-200 passive infrared automatic wall switch turns lighting on and off based on occupancy and ambient light. Built-in light sensor holds electrical lighting off when natural light levels are above pre-set level. Infrared system uses pulse count processing and detection signature analysis to eliminate false triggers, reduce relay stress, and lengthen sensor life. Terminal style wiring eliminates need for wire nuts and speeds installation time.Original Press Release:
New WS-200 Automatic Wall Switch from The Watt Stopper Simplifies Installation
SANTA CLARA, CA - February 2002 - The Watt Stopper announces a new automatic wall switch, the WS-200. Combining a sleek design with streamlined installation features, the WS-200 is a passive infrared (PIR) wall switch that turns lighting on and off based on occupancy and ambient light levels.
To streamline and simplify installation, the WS-200 features terminal style wiring that eliminates the need for wire nuts and speeds installation time. The product also provides a built-in light level sensor to hold electrical lighting off when natural light levels are above a pre-set level. The WS-200 incorporates The Watt Stopper's advanced PIR technology, with Pulse Count Processing and Detection Signature Analysis to eliminate false triggers, and Zero Crossing Circuitry to reduce relay stress and lengthen sensor life.
