Wattstopper WS-250 PIR WALL SWITCH OCC SENSOR
Wattstopper WS-250 PIR WALL SWITCH OCC SENSOR. This is the passive infrared wall switch occupancy sensor. The WS-250 Passive Infrared (PIR) Wall Switch Sensor turns lighting on and off based on occupancy and ambient light level. It replaces existing wall switches and fits behind a standard decorator wall plate.
The WS-250 utilizes advanced PIR technology to detect occupancy. Detection occurs when the WS-250 senses the difference between infrared energy from a human body in motion and the background space. Lighting automatically turns on when occupancy is detected. After a user-specified length of time when no occupancy is detected, lighting automatically switches off. The sensor can also be used with line voltage switches for multi-level lighting.
Features
• Pulse Count Processing eliminates false offs without
reducing sensitivity
• Detection Signature Processing eliminates false triggers;
provides immunity to RFI and EMI
• Zero crossing circuitry reduces stress on the relay and
results in increased sensor life
• Time delay adjustment from 30 seconds up to 30 minutes
• Adjustable unit sensitivity from 20% to 100%
• Light level sensor holds lights off when ambient lighting is
above the preset level
• Custom two-tier Fresnel lens enhances detection at the
desktop level
• Sensor coverage tested to NEMA Guide Publication WD 7-2000
• Patented voltage drop protection
• For safety, there is no leakage to load in the off mode and
sensor is safety grounded
• LED indicates occupancy detection
• Compatible with decorator wall plates
• BAA/TAA-compliant models available
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