1. Introdución
The Streamlight 88066 ProTac Rail Mount HL-X is a high-lumen, multi-fuel weapon-mounted light designed for rapid and secure attachment to MIL-STD-1913 rails on rifles, carbines, and submachine guns. This manual provides essential information for the proper setup, operation, and maintenance of your device.
This light offers versatile operation with either a remote pressure switch or a standard push-button tail switch. It supports dual-fuel technology, allowing operation with two CR123A lithium batteries or one Streamlight rechargeable SL-B26 battery.
2. Que hai na caixa
Upon opening your package, verify that all the following components are included:
- Streamlight 88066 ProTac Rail Mount HL-X Weapon Light
- Interruptor de presión remoto
- Standard Push-Button Tail Switch
- Remote Retaining Clips & Mounting Hardware
- Two CR123A Batteries
- Guía de usuario

Figura 1: All components included with the Streamlight 88066 ProTac Rail Mount HL-X.
3. Configuración
3.1. Instalación da batería
The ProTac Rail Mount HL-X operates on either two CR123A lithium batteries or one Streamlight rechargeable SL-B26 battery. Ensure correct polarity when inserting batteries.
- Unscrew the tail cap from the main body of the light.
- Insert two CR123A batteries (positive end first) or one SL-B26 battery into the battery compartment.
- Replace the tail cap, ensuring it is tightened securely to maintain water resistance.

Figura 2: Battery installation for the ProTac Rail Mount HL-X.
3.2. Montaxe da luz
The integrated rail clamp allows for easy attachment to MIL-STD-1913 rails without requiring additional tools. The light comes with various keys to ensure compatibility with different rail systems.
- Loosen the thumbscrew on the rail clamp.
- Aliñar o cl do carril de luzamp with the desired slot on your MIL-STD-1913 rail.
- Push the light onto the rail until it seats firmly.
- Tighten the thumbscrew by hand until secure. For extra security, a flat-head wrench can be used with the provided groove.

Figura 3: ProTac Rail Mount HL-X mounted on a rail.
3.3. Attaching the Remote Pressure Switch
The remote pressure switch provides momentary and constant-on operation. Use the included retaining clips and mounting hardware to secure the switch and cable to your rail system.
- Replace the standard tail cap with the remote switch tail cap.
- Position the remote pressure switch on your rail in a comfortable and accessible location.
- Use the provided clips and screws to secure the pressure switch and route the cable along the rail, ensuring it does not interfere with weapon operation.

Figura 4: Remote pressure switch installation.
4. Instrucións de funcionamento
4.1. TEN-TAP Programming
The ProTac Rail Mount HL-X features TEN-TAP Programming, allowing you to select from three user-selectable programs:
- Programa 1 (predeterminado de fábrica): High / Strobe
- Programa 2: Só alto
- Programa 3: Baixo/Alto
To change programs:
- Ensure the light 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.
- Release the switch when the desired program is active. The light will flash to confirm the new program.
4.2. Switch Operation (Tail Switch & Remote Switch)
Both the standard push-button tail switch and the remote pressure switch offer similar functionality based on the selected TEN-TAP program.
- Momentaneamente activado: Press and hold the switch. Release to turn off.
- On constante: Press the switch fully and release quickly. Press again to turn off.
- Estroboscópico: Double-tap the switch quickly (if in Program 1).

Figura 5: ProTac Rail Mount HL-X in operation.
5. Características clave
- Alta saída de lumens: Delivers 1000 lumens for maximum illumination.
- Tecnoloxía LED: White LED technology, impervious to shock with a 50,000-hour lifetime.
- TIR Optic: Produces a concentrated beam with optimum peripheral illumination.
- Capacidade de combustible dual: Operates with two CR123A lithium batteries or one Streamlight rechargeable SL-B26 battery.
- Programación TEN-TAP: Offers three user-selectable operating modes (High/Strobe, High Only, Low/High).
- Interruptor de presión remoto: Features momentary and constant-on operation for tactical flexibility.
- Integrated Rail Clamp: Easily attaches to MIL-STD-1913 rails without tools for secure mounting.
- Construción duradeira: Made from 6000 Series machined aircraft aluminum with an impact-resistant tempered glass lens.
- Resistencia á auga: IP67-rated (waterproof to 1 meter for 30 minutes) with standard push-button switch; IP54-rated (water-resistant) with remote pressure switch.

Figura 6: Acabadoview das características e especificacións principais.
6. Mantemento
The Streamlight ProTac Rail Mount HL-X is designed for durability and requires minimal maintenance. Regular cleaning and proper battery management will ensure optimal performance.
- Limpeza: Limpe a luz cun suave, damp un pano para eliminar a sucidade e os residuos. Evite produtos de limpeza abrasivos.
- Substitución da batería: Replace batteries as needed. Always use fresh, high-quality batteries.
- Aneis tóricos: Periodically inspect O-rings for wear and tear. Lubricate with silicone grease if necessary to maintain water resistance.
7 Solución de problemas
If your Streamlight ProTac Rail Mount HL-X is not functioning as expected, consider the following common issues:
- A luz non se acende: Ensure batteries are correctly inserted with proper polarity and are not depleted. Check that the tail cap is fully tightened.
- Funcionamento intermitente: Verify that the tail cap and any remote switch connections are secure. Clean battery contacts if necessary.
- Saída de luz tenue: Replace batteries with fresh ones. Dim output often indicates low battery power.
If issues persist, refer to the warranty and support section for further assistance.
8. Especificacións
| Característica | Detalle |
|---|---|
| Número de modelo | 88066 |
| Saída de luz máxima | 1000 lúmenes |
| Brillo | 50,000 Candela |
| Distancia do feixe | 447 Meters (High) |
| Fonte de enerxía | Battery Powered (2x CR123A or 1x SL-B26) |
| Composición da pila da batería | Litio |
| Tipo de fonte de luz | LED |
| Material | Aluminum (6000 Series machined aircraft) |
| Cor | Negro |
| Dimensións do produto | 5.43" D x 1.45" W x 1.72" H |
| Peso do elemento | 6.4 onzas |
| Nivel de resistencia á auga | IP67 (standard switch), IP54 (remote switch) |
| Característica especial | High Power, Impact Resistant |
9. Garantía e soporte
The Streamlight 88066 ProTac Rail Mount HL-X comes with a Garantía de por vida. For warranty claims, technical support, or any questions regarding your product, please contact Streamlight customer service directly.
Visit the official Streamlight websitio web ou consulte a información de contacto que se inclúe na embalaxe do produto para obter os detalles de asistencia máis actualizados.





