1. Introduction
This manual provides essential information for the safe and effective use of the FLIR VP50-2 CAT IV Voltage Detector and the Klein Tools 6pc Ratcheting Magnetic Nut Driver Set. These tools are designed to assist electricians and technicians in electrical testing and hardware assembly. Please read this manual thoroughly before operation.

Figure 1.1: The FLIR VP50-2 Voltage Detector and Klein Tools 6pc Ratcheting Magnetic Nut Driver Set.
2. FLIR VP50-2 CAT IV Voltage Detector
2.1. Product Overview
The FLIR VP50-2 is a non-contact AC voltage detector designed for reliable voltage presence verification. It features a bright flashlight and provides both vibration and audio alarms to alert users to live AC voltage. Its robust design ensures durability in demanding work environments.
2.2. Features
- Non-Contact Voltage Detection: Detects AC voltage from 90V to 1000V without direct contact.
- Audible and Vibrating Alarms: Provides clear alerts when voltage is detected.
- Integrated Flashlight: Illuminates dark work areas for improved visibility.
- Durable Construction: Withstands drops from up to 3 meters.
- Ergonomic Design: Features an anti-roll case for comfortable handling.
- Low-Profile Probe: Allows access to tight spaces for wire mapping and circuit tracing.
2.3. Setup
Before first use, ensure the device is powered and functional.
- Battery Installation: Open the battery compartment (typically at the rear or base) and insert the required batteries, observing polarity.
- Power On: Press the power button to turn on the detector. A green LED indicator should illuminate, indicating readiness.
- Self-Test: The device performs a self-test upon power-on. Ensure no error indicators are present.

Figure 2.1: Front view of the FLIR VP50-2 Voltage Detector, showing the flashlight and power button.
2.4. Operating Instructions
Follow these steps for safe and accurate voltage detection:
- Power On: Press the power button to activate the detector.
- Flashlight Operation: Press the flashlight button to turn the integrated flashlight on or off.
- Voltage Detection: Place the tip of the detector near the wire, outlet, or electrical component you wish to test. If AC voltage is present within the detection range (90-1000V), the detector will emit an audible alarm and vibrate. A red LED indicator will also illuminate.
- Verify Absence of Voltage: Always test on a known live circuit first, then the circuit to be tested, and then re-test the known live circuit to confirm the detector is functioning correctly.

Figure 2.2: The FLIR VP50-2 Voltage Detector showing the green power indicator light.

Figure 2.3: The FLIR VP50-2 Voltage Detector with its integrated flashlight illuminating a dark area.
2.5. Maintenance
- Cleaning: Wipe the detector with a dry, clean cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
- Battery Replacement: Replace batteries when the low battery indicator appears or the device fails to power on.
2.6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Detector does not power on. | Dead or incorrectly installed batteries. | Replace batteries, ensuring correct polarity. |
| No alarm when voltage is present. | Low battery; device malfunction. | Replace batteries. If issue persists, contact support. |
| False alarms. | Strong electromagnetic interference. | Move away from strong electrical fields; re-test. |
2.7. Specifications
- Operating Voltage Range: 90V to 1000V AC
- Frequency Range: 50/60 Hz
- Operating Temperature: -10°C to 50°C (14°F to 122°F)
- Storage Temperature: -20°C to 60°C (-4°F to 140°F)
- Drop Resistance: 3 meters (9.8 feet)
- Safety Rating: CAT IV 1000V
- Power Source: (Typically 2x AAA batteries, check device for exact type)
3. Klein Tools 6pc Ratcheting Magnetic Nut Driver Set
3.1. Product Overview
The Klein Tools 6pc Ratcheting Magnetic Nut Driver Set provides a versatile solution for fastening hex nuts and bolts. The set includes a comfortable ratcheting handle and six color-coded hollow nut drivers with strong rare-earth magnets for secure grip.
3.2. Features
- 6 Piece Set: Includes common SAE hex sizes from 1/4 to 9/16 inches.
- Ratcheting Handle: Cushioned handle for enhanced comfort and control during repetitive tasks.
- Magnetic Tips: Strong rare-earth magnets securely hold fasteners.
- Hollow Shafts: Allow for fastening on long bolts.
- Color-Coded: Easy identification of nut driver sizes.
- Durable Construction: Made from high-grade impact steel.

Figure 3.1: The Klein Tools 6pc Ratcheting Magnetic Nut Driver Set with handle and individual drivers.
3.3. Operating Instructions
- Select Size: Choose the appropriate nut driver size for your fastener. The drivers are color-coded for quick identification.
- Insert into Handle: Insert the selected nut driver into the ratcheting handle. Ensure it is securely seated.
- Engage Fastener: Place the magnetic tip of the nut driver onto the hex nut or bolt. The magnet will help hold the fastener in place.
- Tighten/Loosen: Use the ratcheting mechanism on the handle to tighten or loosen the fastener. Adjust the ratcheting direction as needed.

Figure 3.2: A Klein Tools nut driver being used with an impact driver for fastening.
3.4. Maintenance
- Cleaning: Wipe the nut drivers and handle with a clean, dry cloth after use to remove dirt and debris.
- Storage: Store the set in its original case or a tool organizer to prevent loss and damage. Keep away from moisture.
- Inspection: Periodically inspect the nut drivers for wear or damage. Replace any damaged components.
3.5. Specifications
- Nut Driver Sizes (SAE): 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch
- Shaft Length: Approximately 5 inches (for extended reach)
- Material: High-grade impact steel
- Magnet Type: Rare-earth magnets
4. Safety Information
Always observe general safety precautions when working with electrical systems and tools.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety glasses and insulated gloves, when working with electrical circuits.
- De-energize Circuits: Whenever possible, de-energize circuits before working on them. Use the voltage detector to confirm circuits are de-energized.
- Inspect Tools: Before each use, inspect both the voltage detector and nut drivers for any signs of damage. Do not use damaged tools.
- Proper Use: Use tools only for their intended purpose. Do not modify tools.
- Environmental Conditions: Be aware of your surroundings. Avoid using tools in wet conditions or explosive atmospheres unless specifically rated for such environments.
5. Warranty and Support
For warranty information or technical support regarding the FLIR VP50-2 Voltage Detector, please refer to the documentation provided with the FLIR product or visit the official FLIR website. For the Klein Tools 6pc Ratcheting Magnetic Nut Driver Set, refer to Klein Tools' official resources.
Keep your purchase receipt as proof of purchase for any warranty claims.





