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frontpage Posted by phoinix | Staff • Last Monday
frontpage Posted by phoinix | Staff • Last Monday

YoLink Smart Temperature / Humidity Monitor w/ 2 Sensors + Hub

+ Free Shipping

$38

$70

45% off
Amazon
26 Comments 11,837 Views
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Deal Details
Yosmart via Amazon has YoLink Smart Temperature / Humidity Monitor w/ 2 Sensors + Hub (YS1603-UC+YS8003-UC*2) on sale for $37.99. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

About this Item:
  • Includes: 2 Sensors + 1 Hub
  • Indoor temperature and humidity sensor
  • Wide range 14° to 122F° (-10° to 50°C)
  • LoRa-based long range/ low power wireless
  • Signals carry through metal, concrete, etc
  • Up to 4 mile open-air range
  • 2+ year expected battery life (two AAA batteries included)
  • Easy to read high-contrast display
  • High and low temperature and humidity alerts
  • Push, email, SMS and optional TTS phone call notifications
  • In-app historical graphs
  • Historical data exporting (CSV file)
  • No subscription required
  • Device control via automation: outlets, plugs, relays, etc.
  • Optional Raedius Web Console (web portal/dashboard)

Editor's Notes

Written by qwikwit | Staff

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Yosmart via Amazon has YoLink Smart Temperature / Humidity Monitor w/ 2 Sensors + Hub (YS1603-UC+YS8003-UC*2) on sale for $37.99. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

About this Item:
  • Includes: 2 Sensors + 1 Hub
  • Indoor temperature and humidity sensor
  • Wide range 14° to 122F° (-10° to 50°C)
  • LoRa-based long range/ low power wireless
  • Signals carry through metal, concrete, etc
  • Up to 4 mile open-air range
  • 2+ year expected battery life (two AAA batteries included)
  • Easy to read high-contrast display
  • High and low temperature and humidity alerts
  • Push, email, SMS and optional TTS phone call notifications
  • In-app historical graphs
  • Historical data exporting (CSV file)
  • No subscription required
  • Device control via automation: outlets, plugs, relays, etc.
  • Optional Raedius Web Console (web portal/dashboard)

Editor's Notes

Written by qwikwit | Staff

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+34
Good Deal
Get Deal at Amazon

Price Intelligence

Model: YoLink Yolink Smart Wireless Temperature/humidity Sensor Wide Range For Freezer Fridge Monitoring Pet Cage/tank Monitoring, App Alerts, Text/sms

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 7/8/2025, 01:00 AM
Sold By Sale Price
Amazon$69.99

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Top Comments

EagerCorn513
192 Posts
34 Reputation
One note on this item, if you set it up via wifi, it will demand you turn on location tracking unnecessarily. Those sorts of things speak a lot about what the company thinks about your privacy and protecting your data.

25 Comments

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Last Tuesday
1,212 Posts
Joined Jul 2006
Last Tuesday
PrincipalMember
Last Tuesday
1,212 Posts
Quote from CrystonTea :
The thermometer has a fixed value refreshing time(send to app) about 30 min that cannot change, or you can refresh/send value via press button on thermometer.
Really stupid design, highly not recommend!
Agree with you 200%. Ran into the same issue with their outdoor sensor. You really wonder why they hire such bad designers/programmers.
Last Tuesday
246 Posts
Joined Apr 2010
Last Tuesday
bloo0153
Last Tuesday
246 Posts
Quote from PrincipalMember :
Agree with you 200%. Ran into the same issue with their outdoor sensor. You really wonder why they hire such bad designers/programmers.
Do you have a problem with the specific amount of time or the inability to adjust the polling period? 30 mins seems reasonable to me. I assume higher rates would affect the battery life.
Last Tuesday
1,212 Posts
Joined Jul 2006
Last Tuesday
PrincipalMember
Last Tuesday
1,212 Posts
Quote from bloo0153 :
Do you have a problem with the specific amount of time or the inability to adjust the polling period? 30 mins seems reasonable to me. I assume higher rates would affect the battery life.
At least for the one that I am using for outdoor, I want to use the temperature to decide when to run the whole house fan. That one has up to one hour of latency. In the evening, as the sun goes down, temperatures are dropping fast. So 30-60 min delay is unacceptable.

With regards to battery life - I am not saying that the thing has to report things every min but if I go on the app and say, get me the current temperature, it should be able to do that. Three/four pulls a day - that cannot be all that bad.

And finally the end user should be able to make the trade off on battery life. If a temperature report out at 5 mins causes the battery life to drop down to 6 months, who cares - I.e. cost of 2 AA batteries every 6 months. I don't mind paying that for having a usable device versus useless device.
Last Tuesday
1,212 Posts
Joined Jul 2006
Last Tuesday
PrincipalMember
Last Tuesday
1,212 Posts
Quote from PrincipalMember :
At least for the one that I am using for outdoor, I want to use the temperature to decide when to run the whole house fan. That one has up to one hour of latency. In the evening, as the sun goes down, temperatures are dropping fast. So 30-60 min delay is unacceptable.

With regards to battery life - I am not saying that the thing has to report things every min but if I go on the app and say, get me the current temperature, it should be able to do that. Three/four pulls a day - that cannot be all that bad.

And finally the end user should be able to make the trade off on battery life. If a temperature report out at 5 mins causes the battery life to drop down to 6 months, who cares - I.e. cost of 2 AA batteries every 6 months. I don't mind paying that for having a usable device versus useless device.
By the way - I have their water leak sensor detectors underneath each one of my sinks. Great stuff - very Apple type product finish and they work well. I also have a couple of outdoor motion detectors for deer alert and the are 50-75 ft away from the house and they are still able to get me the notification. So overall, love the products but this latency thing is a brain dead design.
6d ago
852 Posts
Joined Apr 2018
6d ago
pilotd
6d ago
852 Posts
Quote from PrincipalMember :
At least for the one that I am using for outdoor, I want to use the temperature to decide when to run the whole house fan. That one has up to one hour of latency. In the evening, as the sun goes down, temperatures are dropping fast. So 30-60 min delay is unacceptable.

With regards to battery life - I am not saying that the thing has to report things every min but if I go on the app and say, get me the current temperature, it should be able to do that. Three/four pulls a day - that cannot be all that bad.

And finally the end user should be able to make the trade off on battery life. If a temperature report out at 5 mins causes the battery life to drop down to 6 months, who cares - I.e. cost of 2 AA batteries every 6 months. I don't mind paying that for having a usable device versus useless device.
Have you tried setting the temperature alert thresholds for your fan temperatures?

The sensor is always checking temperature but as you said only periodically wakes up the wireless radio to send it to base. So anything handled app/cloud side can have some lag. But it almost seems like alert thresholds get passed on to the sensor so it will wake up the radio as soon as that temp is reached. At least for my older (but still this style) sensor, the threshold alerts come in at any random time, not the regular intervals.
6d ago
1,212 Posts
Joined Jul 2006
6d ago
PrincipalMember
6d ago
1,212 Posts
Quote from pilotd :
Have you tried setting the temperature alert thresholds for your fan temperatures?

The sensor is always checking temperature but as you said only periodically wakes up the wireless radio to send it to base. So anything handled app/cloud side can have some lag. But it almost seems like alert thresholds get passed on to the sensor so it will wake up the radio as soon as that temp is reached. At least for my older (but still this style) sensor, the threshold alerts come in at any random time, not the regular intervals.
Threshold seems to work when the temperature crosses from low-threshold-high. Not in the other direction. But this is a workaround- I should be able to read real time temperature when I need it. That is what a temperature measuring device is for.
5d ago
56 Posts
Joined Nov 2021
5d ago
ericbox
5d ago
56 Posts
Quote from jaejoonaa :
Not a good thermometer for the deep freezer. I went with Govee WiFi Hygrometer 3 sensors. It's been working great for the last 3 months. My deep freezer is in the detached garage and the main sensor is in the house 20 ft away. Always has signal and loads up within 15 seconds. It covers temps from -18 and up for me at this moment. I recommend them highly.
YoLink sensors work great for freezers. I'd much rather have LoRa connectivity over Wi-Fi for long-range coverage and penetrating thick freezer cabinet insulation, especially for built-in units. I actually use and recommend the YS8007 sensors over the ones with displays. They have a small foot print and the battery lasts forever. They're $16 on Amazon: https://shop.yosmart.com/products/ys8007

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4d ago
1,322 Posts
Joined Dec 2014
4d ago
BrianH5624
4d ago
1,322 Posts
BS. I needed 5 mile range
3d ago
192 Posts
Joined Jul 2019
3d ago
EagerCorn513
3d ago
192 Posts
Quote from robisodd :
Not saying they do or do not protect your privacy, but this is just a limitation of Android. When requesting permission to access nearby Wi-Fi devices, older versions of Android require "ACCESS_FINE_LOCATION" permission. Android 13 finally came out with the "NEARBY_WIFI_DEVICES" permission with an optional "neverForLocation" flag, but if an app developer wants their app to be able to run on older phones (or they're just used to making apps the old way and haven't changed their ways), they'll still request location permissions for Wi-Fi.https://developer.android.com/dev...ermissionshttps://www.reddit.com/r/tasker/c...o/e18almv/
In my case this was ios
Yesterday
5 Posts
Joined May 2009
Yesterday
skrabba
Yesterday
5 Posts
This is a great deal. I've had their products for a few years now, and this looks like a good deal to add more temperature sensors around the home. Great on batteries, and no problem with range.

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