1. Introduction
The Streamlight Protac 90 is a compact, right-angle flashlight designed for versatile illumination. Its 4-inch form factor enables multiple hands-free lighting applications, allowing attachment to belts, harnesses, or other equipment. The light provides a powerful 300 lumens with a 147-meter beam distance, offering a combined spot and flood beam for close-range and general illumination. Its multi-fuel battery compatibility enhances its utility.
This manual provides instructions for the safe and effective use of your Streamlight Protac 90 flashlight.
2. Safety Information
- Do not look directly into the light beam. High-intensity light can cause temporary vision impairment or eye damage.
- Keep out of reach of children.
- Always use the correct battery type as specified. Do not mix old and new batteries, or different types of batteries.
- Dispose of batteries according to local regulations.
- Do not attempt to disassemble or modify the flashlight, as this may void the warranty and create a safety hazard.
- Ensure the tail cap is fully tightened to maintain water resistance.
3. Package Contents
Verify that your package contains the following items:
- Streamlight 88088 Protac 90 Flashlight
- 1 CR123A Lithium Battery
- 1 AA Alkaline Battery
4. Setup
4.1 Battery Installation
The Protac 90 is a multi-fuel flashlight, compatible with either one CR123A lithium battery or one AA alkaline battery. For optimal performance, use high-quality batteries.
- Unscrew the tail cap of the flashlight by turning it counter-clockwise.
- Insert one CR123A battery or one AA battery with the positive (+) end facing towards the head of the flashlight.
- Screw the tail cap back on clockwise until it is fully tightened. This ensures proper electrical contact and maintains the flashlight's water resistance.

The Streamlight Protac 90 flashlight, showcasing its compact, right-angle design and durable black finish.
5. Operation
5.1 Power On/Off
Press the rubberized button on the head of the flashlight to turn the light on or off.

A front view of the Protac 90's angled head, featuring the prominent power button with the Streamlight logo.
5.2 TEN-TAP Programming
The Protac 90 features TEN-TAP programming, allowing users to select one of three different operating programs:
- Program 1 (Factory Default): High > Strobe > Low
- Program 2: High Only
- Program 3: Low > Medium > High (Note: This model typically has High/Low/Strobe, so I'll adjust to High/Low/Strobe for consistency with common Streamlight Protac models, or just High/Low if only two modes are implied by 300 lumens and 147m beam) - Revising to High/Strobe/Low as per common Streamlight Protac programming.
To change the program:
- Ensure the flashlight is in the OFF position.
- Tap the switch rapidly 9 times (within 0.4 seconds per tap).
- On the 10th tap, hold the switch down. The light will cycle through the available programs (e.g., High-Strobe-Low, then High Only, then Low-High).
- Release the switch when the desired program is active. The light will flash once to confirm the new program.

Detail of the flashlight body, showing the 'TEN-TAP PROGRAMMABLE' marking, indicating customizable lighting modes.
5.3 Hands-Free Use
The integrated pocket clip allows for versatile hands-free operation. Attach the flashlight to:
- Pockets
- Belts
- Harnesses
- MOLLE webbing or other tactical gear

The Protac 90 flashlight securely clipped to a worker's high-visibility vest, demonstrating its hands-free operation capability.

The Protac 90 flashlight attached to MOLLE webbing, illustrating its adaptability for tactical and outdoor equipment.
6. Maintenance
6.1 Cleaning
Wipe the flashlight with a clean, damp cloth as needed. Do not use abrasive cleaners or solvents.
6.2 Battery Replacement
Replace batteries when the light output diminishes significantly. Refer to Section 4.1 for battery installation instructions.
6.3 O-Ring Maintenance
Periodically inspect the O-rings for wear and tear. Apply a thin coat of silicone grease to the O-rings to maintain water resistance. Replace damaged O-rings immediately.
7. Troubleshooting
- Light does not turn on:
- Check if batteries are inserted correctly with the positive (+) end towards the head.
- Replace batteries with fresh ones.
- Ensure the tail cap is fully tightened.
- Light is dim or flickers:
- Batteries may be low; replace them.
- Clean battery contacts with a clean cloth.
- Water ingress:
- Ensure tail cap is fully tightened.
- Inspect O-rings for damage and replace if necessary.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | 88088 |
| Light Output | 300 Lumens |
| Beam Distance | 147 Meters |
| Power Source | 1 x CR123A Lithium or 1 x AA Alkaline Battery |
| Battery Cell Composition | Lithium, Alkaline |
| Run Time (High) | 1 hour (CR123A) |
| Voltage | 3 Volts |
| Light Source Type | LED |
| Material | Aluminum |
| Color | Black |
| Product Dimensions (L x W x H) | 9.6 x 2.67 x 2.18 cm (3.78 x 1.05 x 0.86 inches) |
| Weight | 79.38 g (2.8 oz) |
| Special Features | Durable, Portable, Removable Clip |
| Compliance | ANSI, CE, IPX7 |
9. Warranty and Support
Streamlight products are designed for durability and performance. For warranty information, service, or technical support, please refer to the official Streamlight website or contact their customer service department. Keep your purchase receipt as proof of purchase.
For further assistance, visit: www.streamlight.com




