YoLink Smart Wireless Thermometer with Hub — Wide -4°F to 122°F Range, 5-Year Battery Life

The YoLink Smart Wireless Thermometer is a long-range, battery-powered temperature sensor with hub, app alerts, and up to five years of battery life for reliable monitoring in fridges, freezers, greenhouses, pet enclosures and hard-to-reach spots.

Built around YoLink’s LoRa-based mesh, this thermometer avoids WiFi congestion and reaches locations standard wireless devices can’t. The included hub connects the sensor to the YoLink app so you can view live readings, create alert thresholds, and receive notifications by push, email or SMS. Its wide operating range and commercial-grade accuracy make it suitable for both home and small-business monitoring.

How does the YoLink thermometer stay connected where WiFi fails?

Instead of relying on local WiFi, YoLink uses a low-power, long-range radio protocol that extends coverage indoors and outdoors. The hub links those sensors to the cloud so you get status updates and alerts through the app even when the sensor sits in dead zones for traditional networks.

• LoRa-based wireless for extended range—up to a quarter mile in open air.
• Hub included to bridge sensor data to internet services and the YoLink app.
• Works in refrigerators, freezers, garages, barns and other WiFi-poor locations.

What accuracy and temperature range can I expect?

The YoLink sensor is engineered for precise readings across typical household and commercial environments. Accuracy tightens at common ambient temperatures with slightly wider tolerance at extremes, while the device itself functions across subfreezing to warm conditions.

• Accuracy: ±0.36°F between 32°F and 129°F; ±0.72°F from -4°F to 32°F.
• Measurement range: -4°F to 122°F (-20°C to 50°C).
• Consistent performance suitable for fridges, greenhouses, pet spaces and storage areas.

How will I be alerted when temperature goes outside my set limits?

Set custom temperature thresholds in the YoLink app and choose how you want to be notified. The system supports push notifications, emails and SMS; Apple users can opt for Critical Alerts to bypass silent mode, and Android users have comparable options.

• Custom high/low temperature thresholds with instant notifications.
• Alert delivery via push, email or SMS (monthly SMS limits apply with hub).
• IFTTT support and Alexa integration let you trigger automations or ask for current temperature by voice.

How long do the batteries last, and how is maintenance handled?

The sensor runs on two AA batteries sized for long life, reducing the need for frequent replacements—ideal for sensors placed in difficult-to-access locations. The YoLink app provides low-battery notifications so you know when to swap cells.

• Powered by two AA batteries with up to five years of operation depending on use.
• Real-time low-battery alerts through the YoLink app to plan replacements.
• Minimal maintenance thanks to low-power radio and efficient firmware.

Who is this for? The YoLink Smart Wireless Thermometer is well suited for homeowners, gardeners, pet owners, and small businesses that need dependable temperature oversight beyond the reach of WiFi. It’s a strong option for monitoring fridges, freezers, greenhouses, barns, nurseries, kennels and remote storage, especially where long battery life and reliable alerts are priorities. The bundle includes one YoLink Hub and one thermometer sensor, giving you a complete setup for immediate monitoring and notifications.