ECOWITTSoil Moisture Meter WH51, Plant Water Monitor, Soild Hygrometer Sensor for Gardening, Farming Home, indoor and outdoor plants, 868 MHZ

I was going away on a month-long holiday and needed a way to automate the monitoring and watering of my plants. There are loads of DIY solutions on Amazon that use a simple controller or Arduino, but none have an easy interface for me to monitor remotely.This seems to be the only one from a reputable brand with the ability to connect to WiFi (via a bridge) and I already have an Ecowitt weather station, so the cost of the bridge and the setup is already covered.Make sure you use a fresh battery to set up the sensor. After setup, a rechargeable battery can be used and it will continue to work down to 0.9V.UPDATE 2023: Make sure you use the rubber cap hidden underneath the box to cover the battery door; otherwise, there could be water ingress in rainy weather.

These soil sensors allow for better dialing in of soil moisture and go hand in hand with the ecowitt WiFi gateway which hooks directly to your Internet router, the info you get definitely helps new growers get better in a shorter time and it can evenhelp the seasoned gardener to take they're garden to the next level

Already having a weather station I wanted to add soil temperature and moisture to its ability.Adding it to the river station was very simple to do the results started to show very quickly, however I wasn't aware that soil temperature wasn't actually included in this sensor. So just for moisture it's fine otherwise get another sensor if you want to do soil temperature

An excellent product to add you to your Ecowitt weather station (up to 8 soil moisture sensors in total can be added to the HP2551/HP3500/HP3501stations) which is is painless to pair (just connect the battery!) also super easy to accurately calibrate. Extraordinary battery from a single AA cell and a broadcasting range of 100m and updates every 70 seconds makes this a really useful add-on for any keen gardener or farmer for inside or outside use.

This is used to monitor the moisture content for my tomatoes

Good features on app