YoLink Smart Wireless Thermometer Hygrometer, 3-Pack, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts, 5 Years Battery Life- Hub Required
YoLink Smart Wireless Thermometer Hygrometer, 3-Pack, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts, 5 Years Battery Life- Hub Required
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About This
- LORA > WIFI! YoLink devices don’t use your WiFi, ensuring no crowding or slowing down of your network. Instead, they operate with a unique LoRa-based, long-range, low-power wireless protocol. Place smart devices in areas WiFi can’t reach—outdoors, several floors away, in fridges, gun safes, or beyond WiFi range! Using YoLink’s industry-leading technology, this sensor monitors up to 1/4 mile in open air.
- Temperature & Humidity Monitoring: Accurately track temperature and humidity levels with high precision, delivering regular updates to the YoLink app. Manage environmental conditions in your home, greenhouse, fridge or freezer, barn, bedroom, chicken coop, dog kennel, plant nursery, or child's nursery—anywhere you need reliable monitoring. Perfect for maintaining optimal conditions across a wide range of locations and uses.
- Customizable Alerts & Notifications: Stay informed with multiple alert options! Set custom thresholds for temperature and humidity, and choose to receive alerts via text, email, or push notifications. Apple users can bypass silent mode with "Critical Alerts," while Android offers similar options. SMS messages are limited to the total of 5 times each device plus 5. A hub and one sensor provides you with 15 free SMS per month.
- Battery-Powered with Extended Lifespan: Powered by two AA batteries, the sensor delivers up to 5 years of continuous operation, depending on usage and environmental conditions. Receive real-time low battery alerts via the YoLink app, ensuring you're notified when it’s time for a replacement. Designed for convenience, its long-lasting battery life minimizes the need for frequent replacements, making it perfect for hard-to-reach areas and critical monitoring applications.
- IFTTT & Alexa Integration: trigger IFTTT applets based on high or low temperature set points reached (when device alerts). Voice query Alexa for the temperature (only; humidity not supported at this time). Triggering Alexa routines is not supported at this time.
- Commercial-Grade Accuracy and Wide Environmental Range: Designed for precise environmental monitoring, YoLink Thermometer Hygrometer delivers temperature accuracy of ±0.36°F (0°C to 54°C) and ±0.72°F (-20°C to 0°C), and humidity accuracy of ±3% (10%-90% range). It measures temperatures from -4°F to 129°F (-20°C to 54°C) and humidity from 0% to 100%, ensuring stable performance in various environments, whether in cooler temperatures or warmer conditions.
- HUB REQUIRED for full functionality, including for the app to work, but your hub is compatible with a growing family of smart products for home and business! YoLink devices do not use your WiFi, they do not crowd or bog down your WiFi network, but instead they use a unique LoRa-based extreme long-range and low-power wireless protocol unique to most of the smart home industry. Search for B09FSS95G9 for a SpeakerHub, B07TQLKQLJ for the original Hub, B0DCBSPP7L for X3 Hub.
Overview
- Brand : YoLink
- Special Feature : Alarm, High Accuracy
- Color : white
- Age Range (Description) : Adult
- Included Components : Detector
- Outer Material : Plastic
- Specification Met : ANSI, ASME, ASTM, CCC, CE, CSA, EMC, ETL, FCC, FDA, FE, HACCP, ISO 13485, ISO 9000, ISO 9001, NIST, NSF, RoHS, UL, WEEE ANSI, ASME, ASTM, CCC, CE, CSA, EMC, ETL, FCC, FDA, FE, HACCP, ISO 13485, ISO 9000, ISO 9001, NIST, NSF, RoHS, UL, WEEE
- Display Type : LCD
- Connectivity Technology : LoRa
- Unit Count : 3.0 Count

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SMART HOME FAQ
Yes — many modern devices support multiple platforms.
Matter-certified devices can work across Alexa, Google Home, and Apple HomeKit at the same time.
Not always.
Smart bulbs, plugs, cameras, and video doorbells are often easy DIY installations, while full security systems may need professional setup.
Many devices still work manually or through local control.
You may lose remote app access, but locks, lights, and thermostats often continue basic functions.
Security depends on the device and setup.
Use strong passwords, trusted brands, firmware updates, and secure Wi-Fi for better protection. Privacy and unauthorized access are common concerns in smart homes.
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Yes.
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It depends on your ecosystem.
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Home Assistant → advanced control
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