4 in 1 Digital Plant Temperature / Soil Moisture Meter / pH Meter / Sunlight Intensity LCD Display Soil Test Meter for Gardening, Agriculture and

Does the job. If you want better tracking of soil moisture, can't go wrong with this.

This is the only digital soil meter on the market. All others utilize a magnetically operated needle, that swings in front of 3-to-5 scales. As a result, the user gets rough estimates instead of actual numbers. . It is also one of the few that requires battery power to operate. An electric charge is emitted into the soil and is received in the probe. A circuit board measures the tiny changes and reports the results in digital form. Many competing devices use no batteries. I wonder how their diagnoses work without electricity? . I took the meter to task on the first day. The initially readings were off. AMBIEN LIGHT measured 0, although the meter was under a grow lamp. SOIL MOISTURE measured 95% - very wet, although the dirt was only moist. . After a "break in period" of one day, I tested again on the second. The features proved accurate. On the TEMPERATURE feature, I measured room air. The temperature was 1F higher than my oven thermometer and room thermostat. . . . Excellent! . To test the PH feature. I wet a face towel with water. It achieved a 7.1 reading - neutral. Water was neutral. . . . . Then, I wet a spot on the fabric with vinegar. The reading was 6.0 - slightly acid. Although vinegar was 4% acetic acid in distilled water, I expected a strongly acid reading. So, the PH feature was off by a half notch. . The MOISTURE feature worked to perfection. It measured the potted soil at 20% - dry. Examining the dirt, the moisture held the dirt in clumps, but it was relatively dry. . The AMBIEN LIGHT feature was good. Three grow lamps shined on my 10 juniper seedlings in pots. Each light source had a 100 watt grow bulb, with a 1700 lux rating. Putting the meter under one, it measured 2640 lux. With the added indirect light from the two other lamps, the reading seemed correct. . In the past month, I purchased three other competing soil meters and returned all. They tested grossly inaccurate, or some of their features were inoperative. . On this product, the features worked to perfection, except for PH - half correct. A second problem was missing the ability to measure FERTILITY. A third problem was the small text on the screen for TEMPERATURE and MOISTURE readings. They were very small. Other than these three shortcomings, I ranked it the best among the many soil meters available on Amazon. . . ------------------------------------------------------------------------------------------------------------------------- . . UPDATE: After two months of usage, the unit became non-functional. First, it no longer showed moisture. Second, one-fourth of the LCD screen went blank. . I contacted the vendor for warranty repairs/replacement. Within an hour, it responded with a request for a video of the unit in action. In compliance, the unit was turned ON. The regular screen appeared, indicating NO PROBLEMS. .

説明書が英語で困ったと書いてありましたが 難なく使えました

I've searched long before about this kind of machine which can tell about the plants. This product comes across to me when I search for the grow light. Even 5 kinds of information tell. why not. With over 50 plants, it's hard to track all plant conditions. Yes, it's a Chinese product and not that cheap but it came with quite a detailed manual and explanation of each function. it needs 4 AAA batteries which makes it heavy on the top head part. Recently I got several grow lights and this lux meter is quite useful even though we can use cell phones. The first priority is soil moisture 2 lux, 3 PH, 4 temps, 5 fertility for me know. 1. soil moisture. I am not sure about the correctness, but I can satisfy the speed to check and show the percentage of moist and easy condition levels ( dry_,dry+, nor, wet_,wet+) like. 2. light meter, is also quite detailed about the lux and easy levels(Low_Low+NorHihg_high).. I recently bought several grow lights and this shows most grow lights need closer to the plant which can effective only 1 or 2 plants. Also, additional info for me about the temp, pH, and nutrient level can easily and quickly be checked. and C/F big button is also good. Con? or need to improve?- 1. heavy on top. so it is not easy to check small plant pots. 2. readable .. temps and ph are in the middle with big letters so it easily shows information but it took up space to show other information, i prefer to see moisture and lux but it is a small letter but readable. I hope the size may same or can change will be better. 3. light on/off button? it is also a readable option, I hope it will be good for the light-on mode so I can check without pressing other buttons again. Overall, I am so happy about my purchase of this soil meter.

So far good , wondering for how long it will stay good ph metres notoriously go off so will be interesting to see how long it reads ph remotely accurately!