WattStopper WT-1100 Ultrasonic Ceiling Occupancy Sensor

Description:

The WattStopper WT-1100 Ultrasonic Ceiling Occupancy Sensor is a ceiling-mounted occupancy sensor designed to automatically control lighting and building systems based on occupant movement. Operating on 24 VDC and utilizing 32 kHz ultrasonic sensing technology, the WT-1100 provides reliable 360-degree coverage for areas up to 1,100 square feet. The sensor features an isolated relay output that can interface with lighting controls, HVAC equipment, energy management systems, or auxiliary loads. Advanced Signal Processing (ASP) technology helps reduce false activations caused by air movement while maintaining accurate occupancy detection.

Applications:

The WattStopper WT-1100 Ultrasonic Ceiling Occupancy Sensor is commonly used in offices, conference rooms, classrooms, restrooms, storage areas, open office environments, warehouses, hallways, educational facilities, healthcare buildings, and commercial energy management systems where automatic lighting control, occupancy-based switching, HVAC integration, and energy conservation are required to improve operational efficiency and reduce energy consumption.

Technical Specifications:

• Manufacturer: WattStopper / Legrand
• Model: WT-1100
• Product Type: Ultrasonic Ceiling Occupancy Sensor
• Sensor Technology: Ultrasonic
• Ultrasonic Frequency: 32 kHz
• Voltage Rating: 24 VDC
• Current Consumption: 40 mA Maximum
• Coverage Area: 1,100 sq. ft.
• Coverage Pattern: 360° Two-Sided
• Control Output: Automatic ON/OFF
• Relay Type: Isolated Relay
• Relay Rating: 1A @ 24 VDC Resistive Load
• Time Delay: Adjustable, 15 Seconds to 30 Minutes
• Sensitivity: Adjustable
• Mounting Type: Ceiling Mount
• Indicator: LED Occupancy Indicator
• Operating Temperature: Up to 35°C (95°F)
• Applications: Lighting Control, HVAC Control, EMS Integration
• Equipment Category: Occupancy Sensor

Common Replacements:

• WattStopper WT-2200 Ultrasonic Occupancy Sensor
• Leviton OSC20 Ultrasonic Ceiling Sensor
• Hubbell ATU Series Ultrasonic Occupancy Sensor