RAB HIDFA-120S-EX39-8CCT-BYP/5SP LED Lamp
Quick guide for the RAB HIDFA-120S-EX39-8CCT-BYP/5SP LED lamp. Includes technical specifications, installation requirements, field-adjustable settings, and compatibility details.
Table of contents
Quick guide from the manual
The RAB HIDFA-120S-EX39-8CCT-BYP/5SP is a field-adjustable LED lamp designed to replace traditional HID lamps. Key operational requirements include a Ballast Bypass (UL Type B) installation, meaning the existing ballast must be removed or bypassed. The lamp features field-adjustable wattage and color temperature (CCT) settings, and supports optional smart control via the Lightcloud Blue system.
Product Overview
This LED lamp is designed for vertical installation in enclosed fixtures. It features an integrated AUX port for adding lamp-level sensor control and is rated for dry and damp environments with an IP64 rating.

Installation Requirements
- Method: UL Type B, Ballast Bypass. The lamp must be wired directly to line voltage.
- Orientation: Vertical.
- Base Type: EX39 Extended Mogul.
- Environment: Suitable for enclosed fixtures in dry or damp locations.
Field Adjustments
The lamp allows for in-field customization of performance parameters:
- Wattage: Adjustable settings (80W/100W/120W).
- Color Temperature (CCT): Field adjustable via dip switch (3000K/4000K/5000K).
Control and Compatibility
The lamp is compatible with the Lightcloud Blue Bluetooth Mesh Wireless Network Lighting Control System. To enable this, an optional 5-Pin Plug-in Controller must be added. Note that this lamp will not operate properly when connected to a standard incandescent dimmer or dimming control.
Technical Specifications
- Input Voltage: 100-277V
- Operating Frequency: 50/60Hz
- Surge Protection: 4kV
- Color Accuracy: ≥80 CRI
- Lifespan: 50,000-Hour LED lifespan based on IES LM-70 results
- Operating Temperature: -22°F to 140°F (-30°C to 60°C)
Practical help
Common problems
Ensure the lamp is not connected to a standard incandescent dimmer or dimming control, as these are not compatible.
Verify that the ballast has been bypassed or removed (UL Type B installation). The lamp requires direct line voltage.
Before use
- Verify the fixture is enclosed and rated for the lamp's weight and size.
- Ensure the existing ballast is bypassed or removed.
- Confirm the input voltage is within the 100-277V range.
- Check that the installation orientation is vertical.
- Set the desired wattage and CCT using the dip switches before final installation.
Specs in practice
- Ballast Bypass (Type B)
- The lamp requires direct connection to line voltage; the existing ballast must be removed from the circuit.
- Field Adjustable
- The user can manually select between different wattage and color temperature settings on the lamp itself.
Images and diagrams
- The Ordering Matrix on page 3 provides a breakdown of the model number, allowing users to identify specific configurations for wattage, base type, CCT, and sensor options.
Model compatibility
- Not compatible with standard incandescent dimmers.
- Compatible with Lightcloud Blue system via optional 5-Pin Plug-in Controller (e.g., CONTROL/W/AUX/5SP/LCB).
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.