SensorPush HT1 Thermometer Hygrometer

The SensorPush HT1 is a professional-grade wireless thermometer and hygrometer featuring a Swiss-made sensing component for highly accurate, repeatable measurements. Designed and supported in the USA, it provides temperature accuracy of ±0.3°C (±0.5°F) and humidity accuracy of ±3% RH.

The compact sensor (40x40x16.5mm) communicates via Bluetooth Low Energy with a wireless range of up to 100 meters line of sight. Data is collected at one-minute intervals and stored on the sensor for approximately 20 days before older readings are overwritten.

The free SensorPush app for iOS and Android provides detailed graphs, customizable alerts, and unlimited data storage on your device. Set temperature and humidity thresholds to receive instant push notifications when conditions fall outside your parameters. Data can be exported to CSV format for analysis in Excel or other software.

For remote access from anywhere in the world, the optional SensorPush G1 WiFi Gateway (sold separately) connects to your sensors and streams data to the SensorPush cloud. This enables Alexa voice integration and provides unlimited cloud storage with no monthly fees.

The CR2477 lithium coin battery provides 1-2 years of operation—closer to two years in warm conditions, potentially less in extreme cold. The battery is user-replaceable, though CR2477 batteries may require online purchase from specialty retailers.

Home Assistant integration is available through the native SensorPush Bluetooth integration (introduced in HA 2022.8) or via the SensorPush Cloud integration when using the G1 Gateway. Note: Home Assistant auto-discovery may not find HT1 devices in some configurations.

Ideal applications include wine cellars, cigar humidors, guitar cases, greenhouses, reptile enclosures, freezers, refrigerators, RVs, attics, basements, nurseries, and chicken brooders.