No: 24122 – 09/16 rev. 1
Catalog Numbers • Les Numéros de Catalogue • Los Números de Catálogo:
Country of Origin: Made in China • Pays d'origine: Fabriqué en Chine • País de origen: Hecho en China
Wattstopper Ultrasonic Sensors are 24VDC switching devices that automatically switch lighting and HVAC systems off when no
motion is sensed over a given time period. They sense when an area is occupied and turn lights back on again. Wattstopper ultrasonic
occupancy sensors use the doppler shift principle to detect occupancy. Motion in the controlled area causes a slight change in the
reflected frequency and amplitude of the broadcast ultrasonic waves. Wattstopper sensors then control lighting systems through
Wattstopper power and auxiliary relay packs. Placement of the sensor is critical for proper operation. Wattstopper sensors are
volumetric sensors, and sense motion in a 360 degree pattern. It is best to place the sensor so that it has a clear view of all the
desktops or work surfaces within the coverage area. Also, ultrasonic sensors may false-trigger when confronted by high volumes
of air flow. Sensors should be installed at least four feet from most supply ducts and a minimum of six feet from horizontal
discharge ducts. In addition, do not mount sensor within 6" of power pack. Always mount the sensor on a rigid, vibration-free surface.
When positioning the sensor make sure the receiver is aimed away from nearest wall and toward area to be covered.
Unit Controls
All of the controls for the sensor are located on the sides of the sensor.
1. Time Delay: This is labeled "Time" and is adjustable from 15 seconds to 15 minutes. This adjustment determines the length of
time the lights stay ON after no motion has been detected.
2. Sensitivity Adjustment: This is labeled "Sense" and is adjustable from zero to 10. The zero setting is OFF and the 10 setting is
the most sensitive.
3. Bypass Setting: Should a sensor fail, it can be overridden and set to a permanent ON position through the installation of the
override pin provided with the sensor.
4. LED Indicator: The LED will blink each time the unit triggers.
Wattstopper
Ultrasonic Occupancy Sensors
Détecteurs de présence à ultrasons
Sensores de ocupación ultrasónicos
Installation Instructions • Instructions d'Installation • Instrucciones de Instalación
DESCRIPTION AND OPERATION
SENSOR COVERAGES
®
W-500A/W-1000A/W-2000A/W-2000H
SPECIFICATIONS
Voltage .................................................................................. 24VDC
Power Supply ...........................................Wattstopper Power Packs
Current Consumption ...............................................................16mA
Sensitivity Adjustment ...............................................................1- 10
Time Adjustment ......................................15 seconds. to 15 minutes