YoLink Freezer Thermometer Hygrometer Kit — 3-Pack Sensors + Hub, Long-Range LoRa, Multi-Year Battery

YoLink Freezer Thermometer Hygrometer Kit is a long-range, battery-powered sensor bundle with one hub and three sensors for accurate temperature and humidity monitoring in fridges, freezers, and hard-to-reach locations.

This kit pairs three compact thermometer-hygrometer sensors with a YoLink Hub to deliver reliable environmental readings where WiFi can’t reach. Using YoLink’s LoRa-based wireless link, the system sends frequent updates and configurable alerts to the YoLink app without burdening your home network. The sensors are built for wide temperature ranges, multi-year battery life, and integrations with voice and automation services so you can protect stored goods, sensitive equipment, and living spaces.

How does the YoLink system stay connected when WiFi is weak?

The YoLink network uses a long-range, low-power LoRa-based protocol instead of your local WiFi. The Hub relays data between sensors and the cloud, creating coverage that reaches well beyond typical WiFi dead zones.

• LoRa-based architecture provides extended signal reach up to roughly 2034 feet in open air.
• Sensors communicate with the included Hub, not directly to your router, avoiding network congestion.
• Place sensors in basements, garages, freezers, barns, or other remote spots where WiFi can’t go.
• Hub-to-cloud connectivity ensures you get app notifications from anywhere with internet access.

What accuracy and environmental range can I expect from these sensors?

YoLink sensors are engineered for precise readings across a broad temperature and humidity spectrum, making them suitable for refrigerated storage and general household monitoring.

• Temperature range: -4°F to 129°F (-20°C to 54°C) to cover freezers and warm rooms.
• Temperature accuracy: ±0.36°F between 0°C and 54°C; ±0.72°F between -20°C and 0°C.
• Humidity range: 0%–100% with ±3% accuracy across the 10%–90% range.
• Consistent periodic reporting to the app for trend tracking and alerts.

How will I be alerted if conditions go outside safe limits?

Customize alarms in the YoLink app to receive push notifications, emails, or limited SMS messages when temperature or humidity crosses your defined thresholds. Apple users may enable critical alerts; Android users have comparable notification options.

• Create high/low temperature and humidity thresholds per sensor for immediate alerts.
• Notifications sent via push, email, and SMS (limited monthly SMS allotment applies).
• Integrate with IFTTT to trigger automations when alerts occur.
• Real-time low-battery notifications help maintain uninterrupted monitoring.

What integrations and power/maintenance features should I know about?

The sensors run on two AA batteries and can last up to several years depending on update frequency. The hub supports voice queries through Alexa and automation via IFTTT for broader smart-home workflows.

• Battery-powered sensors: two AA cells with multi-year life under typical use.
• Low-battery alerts in the app to plan replacements ahead of time.
• Alexa can report temperature on voice request; humidity not supported by Alexa currently.
• IFTTT support enables applet triggers when devices hit alert conditions.

Who is this for? This YoLink kit suits homeowners, small businesses, and hobbyists who need dependable, long-range environmental monitoring outside normal WiFi coverage—fridge and freezer owners, gardeners with remote greenhouses, pet and livestock caretakers, gun safe users, and anyone storing temperature-sensitive items. The included hub plus three sensors offers coverage for multiple locations or multi-zone monitoring within a property, while the app alerts and integrations help you respond quickly if conditions change.