Introdución
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 seguridade
Always prioritize safety when using electrical testing equipment. Read and understand all instructions before operation.
- Non dirixa o raio láser aos ollos, xa que isto pode causar danos permanentes.
- Read, understand, and follow all instructions, cautions, and warnings attached to and/or packed with all Test & Measurement devices before each use.
- O termómetro NON está pensado para ser usado en persoas ou animais.
- Test on a known live circuit before use to confirm proper operation.
Características do produto
- Vol. AC sen 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 da 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.
Instrucións de funcionamento
Vol. Sen contactotagProbas electrónicas (NCVT)
- Preme o NCV 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.
- Se 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)
- Preme o 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.
Mantemento
- Keep the device clean and free from dust and debris. Use a dry, lint-free cloth for cleaning.
- Substitúa as pilas canto antes apareza o indicador de pila baixa na pantalla para garantir unhas lecturas precisas.
- Garde o dispositivo nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.
Resolución de problemas
- Sen alimentación/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.
Especificacións
| Característica | Especificación |
|---|---|
| Número de modelo | NCVT-4IR |
| Vol. ACtage Alcance | 12V a 1000V AC |
| Rango de temperatura IR | -22 a 482 °F (-30 a 250 °C) |
| Tipo de láser | Clase 2 |
| Relación Distancia a Punto | 4:1 |
| Clasificación de protección de entrada (IP). | IP40 (Dust Resistant) |
| Fonte de enerxía | 2 pilas AAA (incluídas) |
| Dimensións | 6.26 x 1.08 x 1.21 polgadas |
| Peso | 2 onzas |
Garantía e 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 ou póñase en contacto directamente co servizo de atención ao cliente. Garde o recibo de compra para reclamacións de garantía.