YoLink Smart Wireless Temperature/Humidity Sensor Wide Range for Freezer Fridge Monitoring Pet Cage/Tank Monitoring, App Alerts, Text/SMS, Email Alerts, Works with Alexa IFTTT, 2 Pack - Hub Included

YoLink Technology<br> "YoLink" is a proprietary wireless technology provided by YoSmart. which is based on the Semtech's LoRa wireless technology combined with the YoSmart smart home/building protocol, to provide the most advanced smart home/building devices solution. Compared to WIFI, Bluetooth, ZigBee, Z-Wave, and other smart home protocols, it has the advantages of low-power consumption, long-distance coverage (wall penetration), and anti-interference. It is the first smart building/home protocol that can be very easily setup and is a very low cost but creates a reliable, robust and more secure IoT network.<br><br> Requirements:<br> Smartphone or tablet running iOS 9 or higher, Android 4.4 or higher<br> <br> Specification:<br> YoLink Hub<br> Power: In-wall power adapter<br> Input: 5V DC<br> Maximum Current: 1A<br> Working Temperature: -20°C~50°C (-4°F~104°F)<br> Humidity: 0~90% non-condensing<br> <br> YoLink Temperature &amp; Humidity Sensor<br> Voltage: 3V DC (2 - AAA batteries)<br> Alert Temperature: -22°F ~ +158°F, ±0.54°F (-30°C ~ +70°C, ±0.3°C)<br> Low Temperature Alert Default: 64°F (18°C)<br> High Temperature Alert Default: 95°F (35°C)<br> Alert Humidity: 0% ~ 100%, ±3%<br> Low Humidity Alert Default: 0%<br> High Humidity Alert Default: 100%<br> Working Temperature: +14°F~+122°F(-10°C~+50°C )<br> Working Humidity: ≤95% (non-condensing)<br> <br> Package List:<br> 1 x YoLink Hub<br> 2 x YoLink Temperature &amp; Humidity Sensor<br> <br> Please Note:<br> YoLink Hub requires a 2.4 GHz Wi-Fi connection or a wired connection.<br> YoLink products work only in the USA and Canada.

• ⭐ Our unique LoRa-based sensors are different from WiFi, Zigbee, Z-Wave and most other wireless smart sensors in that they are extreme long-range (up to 1/4 mile open-air), low-power (years between battery changes), and work outdoors*, on other floors, and even in a metal box (like a fridge or mailbox)!
• ⭐ your temperature and humidity concerns, whether it's a fridge or freezer, a barn or bedroom, a chicken coop or a dog kennel, a plant nursery or your child's nursery - anywhere! *Consider one of our weatherproof sensors, designed for outdoor use
• ⭐ Save thousands when you make ANY fridge smart (or smarter) with YoLink smart sensors. Start with temperature sensors, then add door/lid sensors, leak sensors and a Power Fail Alarm.
• ⭐ 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.
• ⭐Take advantage of direct ethernet connection and be online almost instantly when you plug your Hub into your router or network switch. Or, use hot spot mode to connect to your WiFi network in moments. Add devices in seconds using our Scan & Play QR code scanner in the app! Set your notification preferences, test your new sensors, then enjoy years of trouble-free operation!
• ⭐You have many options for being notified of device activity! Receive a text, receive an email, receive a phone push notification (including Apple phone "Critical Alert" severe weather/Amber alert type notifications that will activate your phone even if in silent mode. Android phones offer similar functionality, depending on phone manufacturer). SMS messages are limited to the total of 5 times each device plus 5. A hub and two sensors provides you with 20 free SMS per month.