Ecobee SmartSensor vs Sensi Emerson Room Sensor

The Ecobee SmartSensor wins on owner rating, occupancy detection, temperature alerts and integrations through Ecobee thermostats. The Sensi Emerson Room Sensor is cheaper and adds humidity sensing, but it only works with a Sensi Touch 2 thermostat over Bluetooth and has no smart home integrations of its own.

Ecosystem and sensing mix. The Ecobee SmartSensor adds occupancy detection and reaches HomeKit, Alexa and more via Ecobee thermostats, while the Sensi Emerson Room Sensor measures humidity in addition to temperature but is locked to the Sensi Touch 2 thermostat.

The Sensi Emerson Room Sensor measures both temperature and humidity, while the Ecobee SmartSensor measures temperature and detects occupancy but does not read humidity.

Ecobee thermostat owners who want occupancy-aware comfort balancing, temperature alerts, a five-year battery and access to HomeKit, Alexa, Google Home and SmartThings through their thermostat.

Sensi Touch 2 thermostat owners who want an affordable way to even out uneven rooms and also care about humidity readings, and who do not need broader smart home integration.