1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Wattstopper DT-300 Series Dual Technology Ceiling Sensor. The DT-300 series combines Passive Infrared (PIR) and ultrasonic technologies to accurately detect occupancy in various environments. This sensor is designed for low voltage applications and integrates with Wattstopper/Legrand power packs for lighting control.
Please read this manual thoroughly before installation and operation to ensure proper functionality and safety.
2. Product Overview
The Wattstopper DT-300 Series Dual Technology Ceiling Sensor offers 360-degree coverage for occupancy detection. It utilizes two distinct technologies:
- Passive Infrared (PIR): Detects motion by sensing changes in infrared energy (body heat) within its field of view.
- Ultrasonic: Employs the Doppler Principle using 40KHz high-frequency ultrasound to detect occupancy.
Both technologies work in conjunction to provide reliable occupancy sensing. Lights are activated when both PIR and ultrasonic technologies must initially detect occupancy. Once activated, detection by either technology will maintain the lights in an ON state. Lights will turn off after a set time delay when no occupancy is detected by either technology.
Figure 1: Front and side view of the Wattstopper DT-300 Series Dual Technology Ceiling Sensor, showcasing its flat, unobtrusive design.
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | DT-300 |
| Power Source | 18-24VDC/VAC, 25 mA (Requires Wattstopper/Legrand power pack) |
| Coverage Area | Up to 1300 sq ft (360-degree) |
| Detection Technology | Dual Technology (Passive Infrared & Ultrasonic) |
| Mounting Type | Ceiling Mount |
| Dimensions | Approximately 5 x 4.9 x 2.2 inches (Package Dimensions) |
| Item Weight | 0.01 ounces |
4. Setup and Installation
4.1 Safety Precautions
- Ensure power is disconnected at the circuit breaker before installation.
- Installation should be performed by a qualified electrician in accordance with all national and local electrical codes.
- Do not install in locations with excessive vibration or extreme temperatures.
4.2 Mounting Location
Select a ceiling location that provides an unobstructed view of the area to be covered. Avoid mounting near HVAC vents, direct sunlight, or large moving objects that could cause false triggers. The sensor should be centrally located for optimal 360-degree coverage.
4.3 Wiring Instructions
The DT-300 sensor is a low-voltage device and requires connection to a compatible Wattstopper/Legrand power pack. Refer to the power pack's instruction manual for specific wiring diagrams. Typically, the sensor connects to the low-voltage input terminals of the power pack.
- Connect the sensor's low-voltage wires to the corresponding terminals on the power pack.
- Ensure all connections are secure and insulated.
- Verify correct polarity if specified by the power pack.
4.4 Installation Steps
- Turn off power at the circuit breaker.
- Mount the sensor to the ceiling using appropriate hardware (not included). Ensure it is securely fastened.
- Connect the low-voltage wiring from the sensor to the power pack as per the power pack's instructions.
- Restore power and proceed to the operating instructions.
5. Operating Instructions
5.1 Initial Power-Up
Upon initial power-up, the sensor will undergo a brief warm-up period. During this time, the connected lights may cycle on and off. This is normal. The sensor will then enter its operational mode.
5.2 Occupancy Detection
The DT-300 sensor detects occupancy using both PIR and ultrasonic technologies. For lights to turn on, both technologies must initially detect occupancy. Once on, either technology can maintain the lights in the ON state.
5.3 Time Delay Adjustment
The time delay, which determines how long lights remain on after the last detected occupancy, is typically set on the connected Wattstopper/Legrand power pack. Refer to the power pack's manual for instructions on adjusting this setting. Common time delays range from 5 to 30 minutes.
5.4 Manual-On Operation
If a low-voltage switch is connected to the power pack, the lights can be manually turned on. The sensor will then maintain the lights on as long as occupancy is detected, and turn them off after the time delay when the area is vacant.
6. Maintenance
The Wattstopper DT-300 Series sensor requires minimal maintenance.
- Cleaning: Periodically wipe the sensor lens with a soft, dry cloth to remove dust or debris. Do not use abrasive cleaners or solvents.
- Inspection: Annually inspect the sensor for any physical damage or loose connections.
- Testing: Periodically test the sensor's functionality by entering and exiting the coverage area to ensure proper light activation and deactivation.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on with occupancy. |
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| Lights turn off too quickly or too slowly. |
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| Lights turn on without apparent occupancy (false triggers). |
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8. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your Wattstopper/Legrand power pack or visit the official Wattstopper website. Keep your purchase receipt for warranty claims.
Manufacturer: Warehouse Lighting (as listed on product information)
For further assistance, please contact your authorized distributor or the manufacturer's customer service.
