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Klein HVAC Clamp Meter CL445

Jul 06, 2023

Klein has a deep line of test and measurement devices designed for workers in the HVAC, electrical, and plumbing trades. The latest in these specialized tools is the Klein HVAC Clamp Meter CL445, which updates the lineup with an HVAC-specific model. So what does it have to offer HVAC Pros, and where does it fit into the lineup? Let's take a look.

This device is an automatically-ranging true root mean square (TRMS) clamp meter. The digital clamp measures both 600A AC current and inrush current (for testing furnace motors).

The included right-angle test leads measure 750V AC/600V DC voltage, DC microamps (for testing flame sensors), resistance, continuity, frequency, duty cycle, capacitance, and diode tests.

This clamp meter's K-type thermocouple port reads temperatures from -148°F to 1832°F. This is a smaller temperature range than Klein's CL440 model, however that model also carries a larger price tag than the CL445.

Additionally, a backlit LCD display with both V and A functions lets you view both voltage and current measurements at the same time.

This device retails for $99.99 and you can find it wherever Klein tools are sold. The kit includes right-angle input test leads, push-on alligator clips, a K-type thermocouple, a storage pouch, and three AAA batteries. Klein backs your purchase with a 2-year warranty.

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