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AC Infinity

AC Infinity VPD Thermometer, Handheld Environmental Monitor, Captures Leaf VPD and Temperature, Calibrates Smart Controllers, Precision Infrared Range for Plants, Grow Tents, Greenhouses, Terrariums

  • Based on 282 reviews
Condition: New
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$29.99 Why this price?
Black Friday Deal · 35% off was $45.99

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Dec 1 – Dec 2
Order within 1 hour and 7 minutes
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Features

  • A digital thermal gun designed to measure plant leaf VPD for optimized control over your grow environment.
  • Captures environmental data that can be used to calibrate smart controllers that manage grow devices.
  • First of its kind to measure air and leaf VPD, in addition to ambient temp, leaf temp, and relative humidity.
  • Infrared technology utilizes 12-point laser positioning to precisely highlight your exact area of measurement.
  • Automatically saves the historical data from your previous readings to track shifting climate conditions.

Brand: AC Infinity


Special Feature: High Accuracy


Age Range (Description): Adult


Included Components: Infrared Sensor


Outer Material: Plastic


Specification Met: High Accuracy


Display Type: Digital


Product Care Instructions: Wipe Clean


Power Source: Battery Powered


Model Name: AC-TRV3


Package Dimensions ‏ : ‎ 7.52 x 5.43 x 2.24 inches; 10.86 ounces


Item model number ‏ : ‎ AC-TRV3


Batteries ‏ : ‎ 2 AAA batteries required. (included)


Date First Available ‏ : ‎ April 23, 2024


Manufacturer ‏ : ‎ AC Infinity


Best Sellers Rank: #20,657 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #99 in Indoor Thermometers


#99 in Indoor Thermometers:


Customer Reviews: 4.5 4.5 out of 5 stars 282 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 1 – Dec 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Game Changer
Seems Like it’s Legit and Not a some Amazon Counterfeit. Works as intended and Believe it will be a GREAT help. Thanks AC INFINITY ❤️💯
Reviewed in the United States on October 4, 2025 by gale gillam
    • Great product
A must in any indoor grows
Reviewed in the United States on October 4, 2025 by Dustin F
    • Compact and reliable.
I’ve been using the AC Infinity VPD Thermometer for a while now, and I absolutely love it. It’s super versatile—I use it in my grow tent, clone domes, and even my tortoise’s enclosure. The readings pop up almost instantly, and they feel really accurate, which gives me peace of mind. It’s compact and easy to use, so I can carry it around and switch between setups without any hassle. Honestly, this little tool has made monitoring my setups so much easier. If you’re looking for something reliable and convenient, this is it! ... show more
Reviewed in the United States on December 7, 2024 by Dakoda
    • OK
WORKS GOOD BUT YOU HAVE TO LEAVE IT IN THE TENT YOU WANT TO CHECK IF YOU DONT THEN WHEN YOU TAKE LEAF MEASUREMENT AND IT CALCULATES ITS TEMP AGAINTS ABIENT TEMP YOULL BE OFF ON VPD OTHER THAN THAT WORKS GOOD , also helps to have the 69 pro so you can more accurately calibrate it i used 2 different hygrometers i know to be on to manually adjust mine. so far after 2 weeks use and leavening it in tent for15 to 20 mins before checking vpd/ it works good laser dots are not bright enough but still well worth the money ... show more
Reviewed in the United States on April 23, 2025 by Jennifer Phillippe
    • Valuable tool for home growers.
No complaints it works very well.
Reviewed in the United States on October 20, 2025 by James Busch
    • Almost perfect
Review Image by Andy Andy
Great tool to up your game. Perfect quality. Comes with everything as advertised. Only negative I can think of is the instructions it comes with are not clear regarding how to pull the trigger... I mean: should I keep it pressed for a certain amount of time to get the reading or is just a quick press and release enough? Any how, this tool helped me realize I had a way bigger temp diference between leaf and amb temp than I thought and my VPD calculations were a bit off, and it saves me alot of calculating. It's completely worth the money. I got it witha discount, but would pay full price without hesitating. Thanks ACI!!! ... show more
Reviewed in the United States on September 5, 2024 by Andy Andy
    • Helps dial in my controllers numbers.
My tent controller assistant. Really helps dial the numbers is if you'd like to be spot on all around the tent.
Reviewed in the United States on September 28, 2025 by Robert Rose
    • Where’s the dots ?
The laser dots were hard to see under the grow lights . My cheapo that I already had does not have a VPD calculator but you can see the dot. Pass .
Reviewed in the United States on May 2, 2025 by Russ Desroches

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