Ecobee SmartSensor vs X-Sense STH0B Smart Thermometer Hygrometer

The Ecobee SmartSensor, if you already run an ecobee thermostat: it adds occupancy detection, a three-year warranty and a five-year battery. The X-Sense STH0B Smart Thermometer Hygrometer is the better pick for an existing X-Sense base station or when humidity, dew point and CSV history matter more than occupancy.

One measures presence and the other measures the air. The Ecobee SmartSensor reads temperature and detects occupancy for an ecobee thermostat, while the X-Sense STH0B Smart Thermometer Hygrometer reads temperature and humidity and reports them through an X-Sense base station.

No. It communicates over a proprietary 915 MHz radio and has no Wi-Fi, Bluetooth, Zigbee, Z-Wave or Thread of its own, so the Ecobee SmartSensor is only useful as a companion to an existing ecobee thermostat.

No. The X-Sense STH0B Smart Thermometer Hygrometer measures temperature and humidity, with alerts, dew point, VPD and history, but it has no occupancy sensor and no automation engine of its own.

The Ecobee SmartSensor carries 3 years; the X-Sense STH0B Smart Thermometer Hygrometer carries 2. The Ecobee also ships a battery rated for about five years, against about one year on the X-Sense cells.

Buy the Ecobee SmartSensor for an ecobee home that wants occupancy-aware heating and a low-maintenance battery. Buy the X-Sense STH0B Smart Thermometer Hygrometer for an X-Sense base station and a cheap room probe that measures humidity.