This month's ranking
Measure actual soil moisture so you only water when it's really needed.
Uses a capacitive probe (more durable than cheap resistive ones, which corrode over time) and is designed to stay buried permanently ('leave-in'), not for spot checks. It requires a hub from the same manufacturer — without it, the sensor won't report real-time data, it only works as a local probe.
Comes with the WiFi hub included (unlike the standalone sensor above) and adds historical data logging and low-moisture alerts. It integrates directly with the RAINPOINT smart irrigation ecosystem — if you already have or plan to buy a controller from another brand, confirm it supports this integration before buying, since it's a closed ecosystem.
This is not a soil moisture sensor — it's a leak/flood detector meant to be installed near appliances, under a sink, or in the basement. The individual sensors do NOT talk WiFi directly to each other: they use a proprietary long-range radio (up to 1,804 ft) to a gateway, and it's the gateway that connects to your 2.4GHz WiFi and sends alerts via app/SMS/email. GoveeLife sells this same line in variants with and without the gateway included — confirm in the listing that the one you're buying includes it, unless you already have a compatible GoveeLife gateway from another product (H5059/H5830).