--- product_id: 615372877 title: "AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade" brand: "aquahorti" price: "R1782" currency: ZAR in_stock: true reviews_count: 8 url: https://www.desertcart.co.za/products/615372877-ah-20-dli-meter-sunlight-calculator-record-mol-d-10 store_origin: ZA region: South Africa --- # Full Sun: >20mol Partial Sun: 15-20mol Partial Shade: 10-15mol AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade **Brand:** aquahorti **Price:** R1782 **Availability:** ✅ In Stock ## Summary > 🌱 Grow Smarter, Not Harder! ## Quick Answers - **What is this?** AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade by aquahorti - **How much does it cost?** R1782 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/615372877-ah-20-dli-meter-sunlight-calculator-record-mol-d-10) ## Best For - aquahorti enthusiasts ## Why This Product - Trusted aquahorti brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Versatile:** Water-resistant for both indoor and outdoor use. - • **Stylish Integration:** Flower-shaped design complements your garden aesthetics. - • **Optimize Your Growth:** Maximize plant health with precise DLI tracking. - • **User-Friendly Design:** Automatic time zone adjustment for hassle-free operation. - • **Accurate Measurements:** Rigorously calibrated for reliable photon data. ## Overview The AH-20 DLI Meter is a cutting-edge sunlight calculator that measures the daily photon absorption of your plants, providing essential data for optimizing growth conditions. With its user-friendly design, accurate calibration, and stylish appearance, this meter is perfect for both indoor and outdoor gardening enthusiasts. ## Description AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade ## Features - Test the mol of photons per square meters plants absorb day by day. The unit is mol/m²/d. Full Shine: >20mol, Partial Sun: 15-20mol, Partial Shade: 10-15mol, Full Shade: <10mol. - View the DLI for each of the last 10 days. Help growers optimize growing conditions. - Accurate, the PAR Sensor IC is from a famous Japan company. Rigorously calibrated in AquaHorti factory. - OK for indoor and outdoor plants. Able to be sprayed with water. The flower shaped blends with your flowers. - Meter is already based on UTC8 | UTC7 sets the time and automatically tests the number of photons by day. There is no need to turn the device on or off. If you are in a different time zone, can refer to the instruction sheet to change the time. - When AH-20 doesn't work, please change the battery and it will work at once. ## Images ![AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade - Image 1](https://m.media-amazon.com/images/I/519XXuL4TCL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Weak instructions and limited applications, but inexpensive and perfect for what I need. *by D***K on March 22, 2025* A reviewer said these did not work for their indoor plant lights but it worked perfectly for mine. I start seeds indoors and have used both flourescents and LED lights. The question is always how close to get the lights to the plants and how long to leave them on, without overdoing it and burning leaf tips. I bought three (for outdoor use) and was happy that all three read almost the same thing indoors on the 1st day -- close enough for what I need to know. The 2nd day, I put aluminum foil around the setup and all 3 readings jumped by 50%, the kind of thing I need to know.. My other need is to measure the relative levels of light at different spots in my yard, which gets filtered sun (and barely enough) so it's hard to know which is sunniest. I bought 3 so I could compare three different spots on the same day. It has already told me that a spot I thought was a little sunnier actually gets about 10% less over the course of the day, and it was reassuring that I got the same result when I reversed the placement of the three devices the next day. I'll be repeating this around the yard, comparing different spots. I wish I could give only 4.5 stars because the instructions are bad and they have limited applications. I had to read other reviewers' comments, which were very good -- THANK YOU!!! -- to know how they work, and what the number means. (It gives you one number, telling you the total amount of light that the spot gets each day, nothing else. It saves nine numbers.) I also had to look at other reviewer's comments (and Google) to get a better feel for how much light is enough for different plants. It's a little weird that the device is so absurdly simple that you can't turn these devices off except by taking out the battery, and you must remove four little screws to replace that AAA battery. They all arrived with a dead battery in place but came with a second battery and a nice little screwdriver so it was fine, but odd. The tiny clear (silicone?) washers that presumably waterproof the screw hole are too flexible so maybe the device won't last in a high humidity environment; I don't know. I was tempted to give them only 4 stars but for 20$, they told me exactly what I needed to know, both indoors and outdoors, and one might have been enough, so that's hard to beat. ### ⭐ Died after 4 months *by R***T on June 3, 2025* This meter has no warranty other than the 30-day Amazon return policy. Mine lasted about four months of outside use in Hawaii. Tried a new battery, just in case, but it made no difference. ### ⭐⭐⭐⭐⭐ Works Great Once You Know How to Use It *by A***P on June 14, 2024* It's well made with bright large numerals. The trick is understanding how to use it. This is what I do: I set it in the outside location the night before. At midnight, the data in memory location zero is moved to location 1 and location zero is scrubbed. Data starts to accumulate in location zero and you may view it at any time by pressing the button. Once again, at midnight, the total amount of photons in location zero gets moved to location 1, 1 gets moved to 2, and so on. Location zero is now ready to get new data again. It's very ingenious and works well. I do recommend it. ## Frequently Bought Together - AH-20 DLI Meter Sunlight Calculator Record MOL/(㎡d) for 10 Days,Full Sun,Partial Sun,Partial Shade,Shade - Luster Leaf 1875 Rapitest Suncalc Sunlight Calculator - SONKIR Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/615372877-ah-20-dli-meter-sunlight-calculator-record-mol-d-10](https://www.desertcart.co.za/products/615372877-ah-20-dli-meter-sunlight-calculator-record-mol-d-10) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-07*