YoLink Outdoor Temperature Data Logger with Probe & Hub — 1/4 Mile Range, 5+ Year Battery

The YoLink Smart X3 Version Outdoor Temperature Data Logger with Probe is built for reliable, long-term monitoring where distance, battery life, and offline recording matter. This kit ships with a YoLink Hub and a single X3 sensor featuring a probe for liquid and ambient temperature measurement. With up to a quarter-mile (line-of-sight) wireless range, a multi-year battery life, and onboard data logging, the X3 is aimed at outdoor, agricultural, and remote temperature-tracking tasks that require both alerts and historical records.

How does the X3 keep me informed when temperatures go out of range?

The X3 ties into the YoLink cloud via the included hub to push real-time alerts to your phone, send SMS messages, deliver emails, or trigger audible notifications through compatible speakers. You configure thresholds and notification methods in the YoLink app, and optional paid SMS bundles are available for heavier messaging needs.

• Push notifications and emails instantly from the YoLink app
• Five free SMS messages per month per device included; affordable add-ons available
• Optional Siren/SpeakerHub audible alerts and IFTTT/Alexa integrations
• Customizable high/low temperature thresholds and notification schedules

Can the X3 record data when the hub or internet is unavailable?

Yes — the X3 contains an offline data logger that stores temperature readings locally while the sensor is disconnected from the hub. When connectivity is restored, cached readings upload to the cloud so you can review time-stamped measurements without gaps.

• Local logging continues during hub outages or internet loss
• Automatic upload of stored data once connection resumes
• Useful for remote sites or intermittent network access

What environments and uses are suitable for this probe-style sensor?

The probe-equipped X3 is versatile: it monitors liquids like pools, hot tubs, aquariums, and fermentation vessels, and it also measures ambient outdoor or protected enclosures’ temperatures. The unit is designed for outdoor use but must be installed in a sheltered spot away from direct water exposure to protect electronics.

• Pool, hot tub, aquarium and brewing temperature monitoring
• HVAC oversight, freezer/fridge checks, livestock water troughs
• Outdoor or semi-protected installation only — not waterproof
• Works with YoLink smart plugs/switches for automated environmental control

How long will the battery and wireless range support remote monitoring?

The X3 sensor delivers exceptional multi-year battery performance, rated for approximately five years under typical sampling schedules, reducing maintenance needs for remote deployments. Wireless range is designed for long-distance coverage — up to about a quarter mile line-of-sight — making the device suitable for farms, workshops, and larger properties.

• Approximately five years of battery life under typical use
• Up to 1/4 mile line-of-sight wireless range via YoLink protocol
• Low-power design preserves long-term reliability in remote locations

Who is this for: The YoLink Smart X3 bundle is aimed at homeowners, hobbyists, and small businesses that need dependable, long-range temperature monitoring without frequent battery swaps or constant connectivity. Ideal for pond and pool owners, brewers and winemakers, greenhouse and livestock managers, refrigeration checks, and anyone who wants historical data plus instant alerts. If you need rugged distance, local data logging, and flexible notification options with hub-to-cloud convenience, the X3 package is a practical option.