The Temp Stick Remote WiFi Temperature and Humidity Sensor is a battery-powered monitor that connects to home WiFi and posts continuous temperature and humidity readings to a free app. Unlimited text, app, and email alerts fire when readings cross thresholds — perfect for vacation homes, server closets, wine cellars, freezers, and aging-parent homes where a freeze, leak, or HVAC failure needs to be caught immediately.
The data logger stores readings continuously so a multi-day trend is visible at a glance, and integration with Alexa and IFTTT lets the sensor trigger smart-home responses. No subscription fee — full monitoring is included for the life of the device.
Temp Stick is made in America and is one of the few WiFi sensor brands without subscription paywalls. Sister products include longer-life and probe-extension models that integrate with the same app.