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Description
Klein Tools Voltage Tester NCVT4IR 1000V AC Circuit Detector Infrared Thermometer Laser Pointer Backlit LCD HVAC Environmental System InspectionIsolate Live Branch Currents And Measure Climate Terminal Temperatures Instantly With Solid State Infrared Diagnostic Sensing The Klein Tools NCVT4IR is a dual function non contact voltage tester and infrared thermometer pen engineered to detect 12V to 1000V AC electrical grids while recording surface temperature profiles. This HVAC circuit detector uses simultaneous visual and audible alerts to sweep lines without direct conductor contact, protecting
Isolate Live Branch Currents And Measure Climate Terminal Temperatures Instantly With Solid State Infrared Diagnostic Sensing
The Klein Tools NCVT4IR is a dual-function non-contact voltage tester and infrared thermometer pen engineered to detect 12V to 1000V AC electrical grids while recording surface temperature profiles. This HVAC circuit detector uses simultaneous visual and audible alerts to sweep lines without direct conductor contact, protecting operators under a CAT IV 1000V safety envelope. An integrated 4:1 distance-to-spot ratio infrared scanner paired with a targeting laser pointer captures thermal data on furnace panels, exhaust ducts, and structural relays, transmitting live data sets straight onto a high-resolution backlit LCD screen.
Best Used For:
- HVAC Thermal Auditing: Recording temperature variances across furnace panels, motorized blower coils, and ventilation ductwork using an integrated infrared sensor.
- Breaker Panel Sweeps: Scanning commercial distribution tracks and main service entries for active unshielded AC voltage leaks and localized terminal overheating.
- Low-Voltage Control Diagnostics: Verifying insulation integrity and low-voltage electrical properties inside structural thermostats, security lines, and environmental relays.
Key Performance & Safety Features
- Unified Infrared Tool: Merges a broad 12V to 1000V AC non-contact electrical tester with a surface temperature scanner inside a portable frame.
- Laser-Guided Target Optics: Built-in laser alignment pointer illuminates the exact measurement spot to verify target accuracy on tight mechanical linkages.
- Dual Signal Status Alerts: High-intensity glowing LED indicators and a continuous acoustic tone deliver clear warning markers when voltage paths are near.
- IP54 Ingress Defenses: Screw-threaded battery caps fitted with rubberized sealing O-rings bar moisture condensation and fine jobsite dust from entering tool logic pathways.
- Industrial Concrete Survival: Ruggedized impact-resistant casing geometry survives concrete floor deck drop test impacts from heights totaling up to 6.6 feet.
- CAT IV Safety Protection: Formally rated to strict industrial CAT IV 1000V parameters to shield inspectors during high-stakes diagnostics on major supply mains.
What's Included
- NCVT4IR Non-Contact Voltage Tester with IR Thermometer
- Two AAA Alkaline Batteries
Technical Specifications
Pro-Tip: When capturing infrared surface heat metrics on bright metallic ducts, apply a piece of black electrical tape onto the target area first; this neutralizes reflection errors and allows the 4:1 optical lens to pull an exact, stable temperature calculation.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Very impressed
Size: 3.38 Fl Oz (Pack of 1)
Really impressed by this serum! Got this to soothe my skin after overdoing it with too many different “actives”, and it gently and quickly got rid of redness and flaking, restored my skin barrier, and left my skin so moisturized and supple that I didn’t even feel like I needed lotion or cream afterwards. And it’s a GENEROUSLY sized glass bottle, too! I will definitely be trying other products from this brand!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Best skincare product ever
Size: 3.38 Fl Oz (Pack of 1)
This ampoule is THE BEST THING EVER. I’ve been in the skincare industry since 1996 and I’ve never used a product that works as well as this. I have sensitive oily skin and it has a lot of redness. After the first use the redness was completely gone and the hydration was noticeable. Do not pass on this stuff! Highly recommend it for anyone wanting immediate hydration. It’s thin and isn’t sticky or tacky. It feels like I don’t have anything on my face but the benefits are definitely noticeable.
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Reviewed in the United States on April 18, 2026
★★★★★ 4
Good product, but requires consistent use
Size: 1.85 Fl Oz (Pack of 1), Size: 1.85 Fl Oz (Pack of 1)
I’ve been using this centella ampoule for a while now, and overall I like it. The texture is lightweight, absorbs quickly, and leaves the skin feeling hydrated and soothed. It’s especially nice for sensitive or irritated skin.
However, one important thing to note is that the results are not immediate. In my experience, you start seeing improvements with consistent, long-term use rather than overnight. If you’re patient and use it daily, it can definitely help improve your skin’s appearance.
Overall, it’s a good product, but it requires consistency to see full results.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Keeping this in my skincare regimen for the long-haul
Size: 3.38 Fl Oz (Pack of 1)
No matter what skin type you are, you should have this in your lineup. I have larger pores - so sebaceous filaments & clogging. On top of the oiliness of my skin, I have more oily hair as well. But, I get dry patches like crazy. So it’s not easy to find products that meet all of my needs or are universal - it’s usually an “either or” situation. & I end up buying things for my drier days as well as products for my oily days instead of just one set of products. This is one that work well no matter what. There’s more than you’d expect based on the photos - the bottle is bigger. A little goes a long way. It’s very gentle. Great for barrier repair. Great for redness/irritation. A little goes a long way, but it can also be used more than once without being overwhelming. It’s great as a base for other serums/moisturizers, morning or night. It feels really good - clean & light (but not “light” as in ineffective, it still pulls its weight). Must have for anyone looking for trendy Korean glass-skin skincare - she’s one that will get you there without needing to invest in random “viral” products.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
LOVEE (combo & oily skin) 🥹
Size: 3.38 Fl Oz (Pack of 1)
Pretty good! I loveee the applicator since it makes it really easy to apply. My skin has been super glowy ever since I’ve used this. Consistency is super thin and lightweight. My skin doesn’t exactly feel soft but looks really smooth. Despite it being this way, it hydrates super well!
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Reviewed in the United States on March 23, 2026
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