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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Klein Tools CL490 400A AC DC Digital Clamp Meter Dual Display True RMS Auto Ranging HVAC Multimeter with Temperature Probe and NCV TesterTwice the Visibility for Precision HVAC and Electrical Troubleshooting Tackle complex electrical and HVAC diagnostics with confidence using the Klein Tools CL490 Dual Display Digital Clamp Meter. Engineered for professionals working in cramped, dimly lit environments, this auto ranging tool features an innovative secondary display on the bottom of the unit, allowing you to read measurements easily regardless of the meter's orientation. With True RMS
Twice the Visibility for Precision HVAC and Electrical Troubleshooting
Tackle complex electrical and HVAC diagnostics with confidence using the Klein Tools CL490 Dual-Display Digital Clamp Meter. Engineered for professionals working in cramped, dimly lit environments, this auto-ranging tool features an innovative secondary display on the bottom of the unit, allowing you to read measurements easily regardless of the meter's orientation. With True RMS accuracy, the CL490 delivers precise readings for both AC and DC current up to 400A, as well as AC/DC voltage, making it a versatile powerhouse for residential, commercial, and industrial applications.
Built to withstand the rigors of the job site, the CL490 boasts a rugged design capable of surviving a 6.6-foot drop. It is packed with essential features for modern technicians, including a dedicated DC microamp function for testing flame sensors, a thermocouple for temperature measurements, and integrated Non-Contact Voltage (NCV) detection for safety. The high-visibility, reverse-contrast backlit LCD ensures data is legible in any lighting condition, while the ergonomic form factor and thumb-dial allow for easy one-handed operation.
Key Features
- Dual-Display Design: Features a secondary screen on the bottom of the meter for easy viewing in tight, awkward spaces.
- True RMS Technology: Ensures accurate and reliable measurements for AC/DC applications, even on non-linear loads.
- Versatile Measurement Capabilities: Measures AC/DC current, AC/DC voltage, resistance, continuity, frequency, duty cycle, capacitance, and diodes.
- HVAC Ready: Includes DC microamp functionality for flame sensor testing and a thermocouple for temperature readings.
- High-Visibility Screen: Backlit reverse-contrast LCD provides clear, crisp data visibility in dark or bright environments.
- Non-Contact Voltage (NCV): Integrated sensor in the clamp jaw provides audible and visual alerts to voltage presence.
- Rugged Durability: Engineered to withstand drops from up to 6.6 feet (2 meters).
- User-Friendly Ergonomics: Designed for comfortable grip and easy thumb-dial adjustments; includes a side-mounted test lead holder.
- Hands-Free Compatible: Back mount accommodates optional magnetic hangers (sold separately) for convenient operation.
What's Included
- (1) CL490 Digital Clamp Meter
- (1) Set of Right-Angle Input Test Leads
- (1) K-Type Thermocouple
- (1) Storage Pouch
- (2) AA Batteries
- (1) Instruction Manual
Specifications
| Amperage | 400A AC/DC |
| Voltage | 600V AC/DC |
| Jaw Opening | 1.6 in. |
| Display Type | 4000 Count Reverse Contrast LCD |
| Drop Protection | 6.6 ft. |
| Frequency | 10Hz - 60kHz |
| Measurement Type | True RMS |
| Special Functions | DC Microamps, NCVT, Temp |
| Batteries | 2 x AA |
| Material | ABS / Electronics |
Pro-Tip: For HVAC technicians troubleshooting furnace issues, utilize the DC Microamp function to test the flame rectification sensor. A reading below the manufacturer's specification (typically between 2-10 µA) often indicates a dirty sensor or a failing module.
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 861 reviews
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Product Reviews
★★★★★ 4
Great for chewing but very sharp and mangled in a few days
Color: Blue Gator, Size: 1 Count, Color: Blue Gator, Size: 1 Count
I thought this was a fantastic idea having baking soda added for fresh clean teeth while enjoying a new toy. I wanted to review 2 main things about this.
First, if my dog enjoyed this toy. That answer would be yes absolutely! She is chewing it as I’m writing this right now. She can spend a good amount of time chewing away on this and it keeps her busy without having to use a rawhide treat which we only try to use if we re going to be gone for longer then 4 hours. The kids love playing fetch with her and she stays engaged the whole time. It is very heavy and when being thrown can become a weapon so I always supervise!
Last, the durability of the toy. So it is durable but not completely. As you can see the toy got very sharp where she has been chewing it and I’ve even noticed a little blood on it which means it’s cutting her gums. It wasn’t a large enough amount for me to take it away. It is still almost the exact same size but maybe after a month I will re edit this for more accurate on durability since it’s only been about a week that she has gotten it.
Overall, I would recommend this toy it’s a great price and keeps her attention a lot more then other toys I spent twice the amount of money on!
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Reviewed in the United States on March 9, 2022
★★★★★ 3
Too Hard
Color: Blue T-Bone, Size: 1 Count
I have a pit puppy, 20 lbs, who loves to chew. She's huge for her age, and I wanted to get her a new toy. I bought two different toys, hoping she would like one. The other toy was a hit, they both jumped at it and were excited about it, probably because it had rawhide rings that went with it. This one was immediately thrown to the side, even though my pit loves to chew on non edible toys. I think this one was just too hard, because both her, and my Chihuahua-Jack Russell, weren't interested. It didn't have any smell to attract them, which is why I bought it, because they love peanut butter stuff. I'm not going to go as far as to lick it and taste it... I'm pretty sure it won't taste like peanut butter, either. I feel so bad for my little pittie, she's just sitting here with a sad look on her face because my other dog stole the fun chew toy. I've immediately ordered another of one of those so they both have one, but I've just money wasted on this one. It's probably better they don't like it, I'd be worried about them breaking their teeth. I know it's supposed to be for power chewers, but it has no give whatsoever, just extremely hard, shiny plastic. It's useless, unless you're planning on filing it into a point and making a prison shank. Maybe you can leave it in front of the fridge for your SO to step on in the middle of the night when he goes to steal your almond milk. I'll figure out some way to use it. I did dip it into my boyfriend's peanut butter jar to let my puppy lick it, but I can do that with a spoon. I wanted her to feel like she got something, maybe my other dog will let her have a turn with the fun toy after awhile. That's the only reason I gave it 3 stars. You can dip it in peanut butter and I was being generous.
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Reviewed in the United States on March 27, 2022
★★★★★ 5
Can become brittle with sharp edges with use.
Color: Blue T-Bone, Size: 1 Count
Our little dog loved chewing this, however after chewing the toy became jagged and brittle with sharp edges that cut into her upper lip which took about 2 weeks to heal. Unfortunately the return window had closed.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Busy bone
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves these!! Great busy bone! And they can hold it with her paws really well. It does kill your foot if you step on it barefoot in the middle of the night. This is a picture of the bone after 7months.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
My Dog Loves this!
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves her Nubbies! My Dog chews her Nubbie every morning after she has her breakfast. She sometimes wants my husband or I to hold it for her while she chews on it. I think it is really good for her teeth and gums. These last a few months for our dog who chews it every morning. After a few months the edges get a little rough from all the chewing so I throw it out and replace with a new one. These are very reasonably priced, so I always have a fresh one ready to go. She gets very excited when we get a new one out of the package..
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Reviewed in the United States on September 5, 2025
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