Introducción
The Klein Tools NCVT-4IR is a versatile tool designed for professionals, combining non-contact AC voltage detection with an integrated infrared (IR) thermometer. This manual provides essential information for safe and effective operation of your device.

Image: The Klein Tools NCVT-4IR device, a yellow and black pen-style tool, shown from an angled perspective.
Información de seguridad
Always prioritize safety when using electrical testing equipment. Read and understand all instructions before operation.
- No dirija el rayo láser hacia los ojos, ya que esto puede causar daño ocular permanente.
- Read, understand, and follow all instructions, cautions, and warnings attached to and/or packed with all Test & Measurement devices before each use.
- El termómetro NO está diseñado para su uso en personas o animales.
- Test on a known live circuit before use to confirm proper operation.
Características del producto
- Vol. CA sin contactotage Detection: 12 to 1000V AC.
- Integrated Infrared Thermometer: Measures temperatures from -22 to 482°F (-30 to 250°C).
- Laser Pointer: For targeting temperature measurement areas.
- Visual and Audible Indicators: For voltage detección.
- Dust and Water Resistant: IP40 rating.
- Pocket Clip: For convenient portability.

Image: An infographic highlighting key features of the NCVT-4IR, such as its infrared thermometer range, AC voltage detection, and LCD backlit display.
Configuración e instalación de la batería
- To install or replace batteries, twist the end cap counter-clockwise to remove it.
- Insert two new AAA 1.5V batteries, ensuring correct polarity (+/-).
- Replace the end cap and twist clockwise until secure. Ensure the cap is fully tightened for proper operation and IP40 rating.
- To prevent accidental activation and battery drain during storage, slightly loosen the end cap to disengage battery contact.
Instrucciones de funcionamiento
Vol sin contactotage Testing (NCVT)
- Presione el SIN VALOR COMERCIAL button to activate the non-contact voltage detection mode. The tip will illuminate blue.
- Place the tester's tip near the conductor, outlet, or circuit you wish to test.
- Si AC voltage is detected (12V to 1000V), the tip will glow red, and an audible alarm will sound. The intensity of the visual and audible indicators increases with voltage strength or proximity to the source.
- Always test on a known live circuit first to ensure the tester is functioning correctly.
Infrared Thermometer (IR)
- Presione el IR button to activate the infrared thermometer. The laser pointer will activate to help aim.
- Point the laser at the surface you wish to measure. The temperature will be displayed on the LCD screen.
- The temperature range is -22 to 482°F (-30 to 250°C).
- To switch between Fahrenheit and Celsius, press and hold the IR button.

Image: The NCVT-4IR being used to measure the temperature of an electrical component, with the laser pointer visible.
Mantenimiento
- Keep the device clean and free from dust and debris. Use a dry, lint-free cloth for cleaning.
- Reemplace las baterías rápidamente cuando aparezca el indicador de batería baja en la pantalla para garantizar lecturas precisas.
- Guarde el dispositivo en un lugar fresco y seco, alejado de la luz solar directa y de temperaturas extremas.
Solución de problemas
- Sin energía/pantalla apagada: Check battery installation and ensure the end cap is fully tightened. Replace batteries if necessary.
- Inaccurate NCV Readings: Ensure the tip is close enough to the conductor. Test on a known live circuit to verify functionality. Environmental factors can sometimes affect sensitivity.
- Inaccurate IR Readings: Ensure the laser is aimed directly at the target surface. Reflective surfaces can affect accuracy.
Presupuesto
| Característica | Especificación |
|---|---|
| Número de modelo | NCVT-4IR |
| Vol. CAtage Rango | 12V a 1000V AC |
| Rango de temperatura IR | -22 a 482 °F (-30 a 250 °C) |
| Tipo de láser | Clase 2 |
| Relación de distancia al punto | 4:1 |
| Clasificación de protección de entrada (IP) | IP40 (Dust Resistant) |
| Fuente de poder | Baterías 2 x AAA (incluidas) |
| Dimensiones | 6.26 x 1.08 x 1.21 pulgadas |
| Peso | 2 onzas |
Garantía y soporte
Klein Tools products are designed for durability and performance. For warranty information or technical support, please refer to the official Klein Tools webSitio web o contacte directamente con el servicio de atención al cliente. Conserve el recibo de compra para reclamaciones de garantía.





