Mill Sense is a sensor that measures and logs statistics for air quality, temperature, and humidity. You can view the statistics in the Mill app. Mill Sense has a built-in lithium battery that lasts between 1-3 months (depending on the update interval), or it can remain permanently connected to a USB charger. When connected to a charger, the sensor may be affected by the heat generated during battery charging.
Mill Sense can also be set to automatically calibrate Mill heaters and WiFi sockets. Mill Sense is designed to be mounted on a wall at chest/shoulder height to measure the felt temperature in the room