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

I was surprised these guns weren’t dearer because some guns that only read temp are more expensive. It seems well made too I’d definitely say they’re worth the money!! If you grow using vpd as a guide one of these guns is a must it takes all the guesswork out and the plants love the temp and humidity I’ve set it at

Works great

Very techinal when u start using bits like this

I’ve been using the AC Infinity VPD Thermometer for my plant setups, and overall, it’s a solid and well-designed tool. It fits comfortably in the hand, feels sturdy, and comes from a brand I already trust for environmental control equipment. The display is clear, and the layout of the buttons makes it easy to switch between modes without any confusion. What impressed me most is how helpful it was for calibrating temperature offsets between my plants and their environment. I used it to measure leaf temperatures inside my IKEA greenhouse cabinets, and it made tracking per-plant VPD much more precise. The instruction manual even includes a detailed table listing reflection settings for different materials, which means you can use it beyond plant applications. It’s surprisingly versatile for such a compact device. On the downside, I noticed that the ambient temperature and humidity readings take a little while to settle. They tend to be slightly off at first, especially in smaller enclosed spaces, but you can manually set offsets for both temperature and humidity to correct that. Once adjusted, the readings are reliable. If I could change one thing, it would be the lack of Bluetooth or data logging features (Yes, you get a history of 5 readings on the device, but if you have multiple leaves and want accurate offset, 5 readings is not enough) . Being able to record multiple readings and sync them with environmental sensor data would make the process of calculating leaf and plant offsets much faster and more accurate. Hopefully Ac Infinity will make a Gen 2 / Pro model with connectivity features included one day. I already know if they will add connectivity to this meter I will be upgrading without hesitation! I also wish the device would come with a case or have a case for sale as an accessory. You can store it in a box it arrived in, but given the amount of water and humidity in many grow areas, a plastic case (like the one You get with their PH meters) would be a perfect addition helping with reliabile long term storage. Even with that limitation, this is still an excellent thermometer for anyone serious about dialing in their growing conditions. It’s practical, accurate after calibration, and feels built to last. Oh and it came with Duracell batteries, so you can unbox it and use it right away without having to worry about power for quite some time!

Humidity takes forever to adjust (like a whole night) and it's 10% off... Absolute rubbish

Sehr cool das Gerät, Blatttemperatur unterscheidet sich zur Raumtemperatur . Wie ich feststellen konnte macht die Lampe auch noch mal ein unterschied.

It helps me dile my grow in perfect home growers for the win

Great thermometer. The VPD ability is key as I need a very specific range for my plants. It also allows me to know leaf surface temperature, which is another key variable for environmental control. Easy to use and read, great value for the price.

All perfect, I love Ac infinity quality products