Introduction
The Optronics ILL28CMBP is an Opti-Brite LED Dome Light featuring an integrated motion sensor. Designed for robust performance, this light is suitable for various applications, including refrigerated trucks and trailers, due to its ability to operate in extreme temperatures ranging from -40°F to 140°F (-40°C to 60°C). It supports both 12VDC and 24VDC systems with an operating voltage range of 7-30VDC, incorporating a voltage cut-off at 7VDC to prevent battery drain. This manual provides essential information for the proper installation, operation, and maintenance of your LED dome light.
Safety Information
- Always disconnect power before installation, maintenance, or repair.
- Ensure all wiring connections are secure and insulated to prevent short circuits.
- Verify the power source voltage matches the product specifications (7-30VDC).
- Do not modify the light or its components, as this may void the warranty and create safety hazards.
- Keep the light away from flammable materials during operation.
What's in the Box
- One Optronics ILL28CMBP LED Dome Light with Motion Sensor
Setup and Installation
The Optronics ILL28CMBP LED Dome Light is designed for ceiling mount installation and requires hardwired connections.
Installation Steps:
- Prepare Mounting Location: Select a suitable ceiling location for mounting. Ensure there is sufficient space and structural integrity to support the light.
- Disconnect Power: Before beginning any wiring, ensure the power supply to the installation area is completely disconnected.
- Wiring: The light comes with 16-inch, 16-gauge power and ground wires with tinned ends. Connect the positive (+) wire from the vehicle/power source to the light's power wire, and the negative (-) wire (ground) to the light's ground wire. Ensure connections are secure and properly insulated. The light operates on 7-30VDC.
- Mounting: Position the light against the ceiling. Use appropriate fasteners (not included) through the designated mounting holes on the light's housing to secure it firmly to the surface.
- Restore Power: Once installation is complete and all connections are verified, restore power to the system.

Figure 1: A top-down view of the Optronics ILL28CMBP LED dome light, showing its rectangular white housing, clear patterned lens, and central motion sensor. The LEDs are illuminated, indicating its operational state.
Operating Instructions
The Optronics ILL28CMBP LED Dome Light features an integrated motion sensor for automatic operation.
- Automatic Activation: The motion sensor detects movement within its range and automatically activates the LED light.
- Automatic Deactivation: After a period of no detected motion, the light will automatically turn off to conserve power. The exact duration before deactivation may vary based on environmental factors and internal programming.
- Power Supply: Ensure the light is connected to a continuous power supply within the specified voltage range (7-30VDC) for proper function.
Maintenance
Regular maintenance ensures optimal performance and longevity of your LED dome light.
- Cleaning: Clean the polycarbonate lens and housing periodically with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the material.
- Inspection: Periodically inspect the wiring and mounting for any signs of wear, damage, or loose connections. Address any issues promptly.
- Environmental Considerations: The light is designed for extreme temperatures, but ensure it is not exposed to conditions beyond its specified operating range.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | No power, incorrect wiring, faulty connection, motion sensor obstructed. | Check power supply. Verify wiring connections. Ensure motion sensor is clear of obstructions. |
| Light stays on continuously. | Constant motion detected, sensor malfunction. | Ensure no continuous motion is within the sensor's range. If problem persists, contact support. |
| Light flickers or dims. | Unstable power supply, loose connection, low voltage. | Check power source stability. Inspect wiring for loose connections. Verify voltage is within 7-30VDC. |
Specifications
- Model: ILL28CMBP
- Light Source: LED
- Diode Count: 10
- Brightness: 1,400 raw lumens, 990 effective lumens
- Amp Draw/Voltage: 0.024A at 12.8VDC
- Operating Voltage: 7-30VDC (voltage cut-off at 7VDC)
- Special Features: Motion Sensor, Extreme Temperature Operation (-40°F to 140°F)
- Material: Polycarbonate lens and housing
- Mounting Type: Ceiling Mount
- Wiring: Hardwired with 16-inch, 16-gauge power and ground wires with tinned ends
- Dimensions: Approximately 18.25 inches (length)
- Item Weight: 1 pound
Warranty and Support
The Optronics ILL28CMBP LED Dome Light is backed by the following warranties:
- Lifetime LED Warranty: Covers the LED components for the lifetime of the product.
- Three Year Warranty: Covers other components and manufacturing defects for a period of three years from the date of purchase.
For warranty claims or technical support, please refer to the contact information provided with your purchase documentation or visit the official Optronics website.