


About Klein Tools
As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.
Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day … Since 1857.
Non-Contact Volt Tester, 12 - 1000V AC Pen with IR Thermometer -22 to 482 deg F, LED and Audible Alarms, Pocket Clip
Klein Tools NCVT-4IR is a voltage tester that provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires; as well as infrared (IR) thermometer measurements, making it the perfect choice for HVAC professionals.
- Voltage Tester designed specifically for HVAC applications
- Non-Contact Voltage Tester provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires, and AC voltage in security, entertainment, communications
- Detects AC voltage from 12 to 1000V with visual and audible indicators
- 4:1 distance-to-spot ratio IR thermometer with user selectable Degrees Fahrenheit or Degrees Celsius from -22 to 482-Degree Fahrenheit (-30 to 250-Degree Celsius)
- Convenient laser pointer to target measurement area for temperature measurement
- Backlit LCD display with 0.1-Degree resolution
- Auto power-off conserves and extends battery life
- Screw-thread battery cap with O-ring ensures dust and water resistance
FEATURES

Voltage Tester provides non-contact determination of AC voltage

Volt Pen's compact design includes pocket clip for easy access

Tester offers infrared thermometer measurements
![]() NCVT1P | ![]() NCVT1XT | ![]() NCVT2P | ![]() NCVT3P | ![]() NCVT-4IR | ![]() NCVT-6 | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — no data | — | — | — | — |
| Mfg. No. | NCVT1P | NCVT1XT | NCVT2P | NCVT3P | NCVT-4IR | NCVT-6 |
| Non-Contact Voltage Tester Pen, 50 to 1000V AC | Non-Contact Voltage Tester, 70 to 1000V AC | Dual Range Non-Contact Voltage Tester 12 - 1000V AC | Dual Range Non-Contact Voltage Tester with Flashlight, 12 - 1000V AC | Non-Contact Voltage Tester Pen, 12-1000 AC V with Infrared Thermometer | Non-Contact Voltage Tester Pen, 12-1000V AC, with Laser Distance Meter | |
| Voltage | 50 - 1000V AC | 70 - 1000V AC | Range 1: 12 – 1000V AC; Range 2: 70 – 1000V AC | Range 1: 12 – 1000V AC; Range 2: 70 – 1000V AC | 12 - 1000V AC | 12-1000V AC |
| Special Features | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | Flashlight, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | : IR Thermometer, Laser Pointer, LCD, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | Laser Distance Measuring, Laser Pointer, Reverse Contrast LCD, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip |

Non-Contact Volt Tester, 12 - 1000V AC Pen with IR Thermometer -22 to 482 deg F, LED and Audible Alarms, Pocket Clip

About Klein Tools
As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.
Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day … Since 1857.

Klein Tools NCVT-4IR is a voltage tester that provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires; as well as infrared (IR) thermometer measurements, making it the perfect choice for HVAC professionals.
- Voltage Tester designed specifically for HVAC applications
- Non-Contact Voltage Tester provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires, and AC voltage in security, entertainment, communications
- Detects AC voltage from 12 to 1000V with visual and audible indicators
- 4:1 distance-to-spot ratio IR thermometer with user selectable Degrees Fahrenheit or Degrees Celsius from -22 to 482-Degree Fahrenheit (-30 to 250-Degree Celsius)
- Convenient laser pointer to target measurement area for temperature measurement
- Backlit LCD display with 0.1-Degree resolution
- Auto power-off conserves and extends battery life
- Screw-thread battery cap with O-ring ensures dust and water resistance
FEATURES

Voltage Tester provides non-contact determination of AC voltage

Volt Pen's compact design includes pocket clip for easy access

Tester offers infrared thermometer measurements
![]() NCVT1P | ![]() NCVT1XT | ![]() NCVT2P | ![]() NCVT3P | ![]() NCVT-4IR | ![]() NCVT-6 | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — no data | — | — | — | — |
| Mfg. No. | NCVT1P | NCVT1XT | NCVT2P | NCVT3P | NCVT-4IR | NCVT-6 |
| Non-Contact Voltage Tester Pen, 50 to 1000V AC | Non-Contact Voltage Tester, 70 to 1000V AC | Dual Range Non-Contact Voltage Tester 12 - 1000V AC | Dual Range Non-Contact Voltage Tester with Flashlight, 12 - 1000V AC | Non-Contact Voltage Tester Pen, 12-1000 AC V with Infrared Thermometer | Non-Contact Voltage Tester Pen, 12-1000V AC, with Laser Distance Meter | |
| Voltage | 50 - 1000V AC | 70 - 1000V AC | Range 1: 12 – 1000V AC; Range 2: 70 – 1000V AC | Range 1: 12 – 1000V AC; Range 2: 70 – 1000V AC | 12 - 1000V AC | 12-1000V AC |
| Special Features | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | Flashlight, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | : IR Thermometer, Laser Pointer, LCD, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip | Laser Distance Measuring, Laser Pointer, Reverse Contrast LCD, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip |


























