April 15, 2024

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On the finish of 2023, I reviewed the TP-Hyperlink Kasa KE100 radiator valve and had very blended emotions in the direction of it. It’s implausible worth for cash, however on the time, it was not suitable with the TP-Hyperlink Tapo H100 hub, and I went on to criticise the mess of Kasa and Tapo interoperability.

Not too long ago, issues have modified, and now you can use the KE100 with any of the Kasa or Tapo hubs and TP-Hyperlink appears to have considerably improved the interoperability between the 2 techniques. They’ve even rolled out Matter to the Tapo H100 hub.

This, subsequently, modified my general opinion of the KE100, and the entire Kasa/Tapo scenario is considerably higher.

I now assume that the KE100 TRV is among the finest sensible thermostatic radiator valves available on the market because of the enticing pricing of the valve itself, the corresponding sensors and the interoperability between completely different sensible residence ecosystems because of the Matter assist.

I’ve now dedicated to utilizing the KE100 on my bed room radiators and workplace, as these are solely used often and on schedule, which I manually set to match my Tado settings.

To enhance the system, I purchased the TP-Hyperlink Tapo T315 Temperature & Humidity, which permits me to get extra correct temperature readings. 


  • The Tapo H100 Good Hygrometer gives real-time and correct monitoring of temperature and humidity ranges. With a claimed measurement accuracy of ±0.54°F and ±3% RH, it ought to provide dependable readings.
  • It has a 2.7-inch e-ink show that reveals the present temperature and humidity ranges. It additionally signifies the consolation stage utilizing facial expressions, together with the battery situation and WiFi sign power.
  • For residence automation, the system can routinely flip linked gadgets on or off, akin to a heater, fan, humidifier and extra. This goals to optimise consolation ranges and doubtlessly save power.
  • You possibly can obtain app notifications when situations fall outdoors a predefined vary. This lets you take motion if ranges turn out to be uncomfortable.
  • It provides free cloud storage for the recorded temperature and humidity knowledge. The app additionally gives periodic summaries in graph format for evaluation.
  • You will want a Tapo hub (H100 or H200) is required to allow the complete sensible options. This contains distant monitoring, automation, knowledge export and extra.

Design / Unboxing

The Tapo T315 is just like many different temperature and humidity sensors, such because the SwitchBot Meter Plus.

 It’s a easy design and makes use of an e-ink show to preserve battery. The e-ink can also be good because it doesn’t give off any mild, so you need to use it in a bed room with out disturbing you, and it’s glare-free.

The show has a row every for the temperature and humidity sensor, then a further row with indicators for the battery, paired standing and a smiley/frowny face to point the consolation ranges.

The sensor is powered by two AAA batteries, which ought to last as long as two years. That is double the battery life in comparison with the sensors I used on my Genius Hub system and round 6 months longer than the Tado temperature sensor.


As I already had the Tapo H100 hub arrange, I simply had to enter the app, choose add a brand new sensor, then the T315 and choose the right hub to connect it to. You then put the sensor into pairing mode by holding down the sync button on the sensor and look ahead to it to attach.

Linking to TP-Hyperlink Kasa Good Thermostatic Radiator Valve KE100

I discover that almost all sensible TRVs can provide inaccurate temperature readings by a few levels when heating. I assume it’s because the sensor is closed to the place the warmth is being given off.

Subsequently, including a further sensor offers extra correct readings and in my case, I maintain the sensor on my workplace desk so it ought to be correct for the place I’m sat.

Throughout the settings of the KE100, should you go to temperature correction, you may have the choice to change from the built-in sensor to a delegated sensor the place you’ll be able to assign the T315.

Including to House Assistant By way of Matter

I skilled some issues with the hub and sensor with Matter and House Assistant. I’ve discovered House Assistant might be fairly temperamental with Matter.

With this hub, the app was in a position to establish the hub and began to generate the credentials however then saved informing me to connect with the right WiFi, regardless that I used to be on it.

Nonetheless, I used to be simply in a position so as to add the hub to Google House and SmartThings. You possibly can then combine the hub with House Assistant by way of SmartThings.


The sensor has an accuracy of:

  • Temperature Accuracy: ±0.3°C /±0.54°F
  • Humidity Accuracy: ±3percentRH

As compared, the SwitchBot Meter Plus is:

  • Temperature Accuracy: ±0.2℃ / 0.4℉
  • Humidity Accuracy ±2 %

And the SwitchBot Indoor/Outside Thermo-Hygrometer is

  • Temperature Accuracy: ±0.2℃ / 0.4℉
  • Humidity Accuracy ±2 %

I even have the Airthings View Plus in my workplace, which has an accuracy of:

  • Temperature ∓ 0.1°C / F
  • Humidity ∓1%

In the course of the previous couple of weeks, I’ve used the T315, and I’ve discovered the heating efficiency to be rather more dependable, with the sensor offering the correct temperature for the TRV.

The temperature of the T315 matches my Airthings nearly completely, whereas the  Switchbot hub, which is caught on my wall a bit larger up, registers round 2°C decrease than the Tapo.

Though the official accuracy of the Tapo sensor isn’t pretty much as good as a number of the different sensors, it’s completely sufficient for bettering the accuracy of room temperature readings.

Worth and Different Choices

The TP-Hyperlink Tapo T315 has an RRP of £30 however is accessible on Amazon for round £23.

There may be additionally the Tapo T310 sensor, which lacks a show and is accessible for simply £13.

The SwitchBot Good Thermometer Hygrometer Plus is accessible for simply £22 and the IP65 rated Indoor Outside Hygrometer Thermometer is a discount at £12. With SwitchBot, if you wish to use Matter, you’d want the SwitchBot Hub 2, which is round £64.


The TP-Hyperlink Tapo T315 is a fundamental and inexpensive temperature sensor with a show that compliments the opposite Tapo sensors properly.

It’s a excellent pairing with the Kasa KE100 radiator valve, because it permits you to get correct temperature readings for the place you sit.

The primary factor for me is that each the KE100 valve and T315 are considerably cheaper than a valve plus sensor from manufacturers like Tado and different whole-home heating options. You clearly don’t get boiler management utilizing Tapo, however I believe the KE100 valve is an ideal inexpensive various for lesser-used rooms the place it’s possible you’ll be comfortable utilizing a set schedule fairly than on-demand heating.

TP-Hyperlink Tapo T315 Overview


The TP-Hyperlink Tapo T315 is a fundamental and inexpensive temperature sensor with a show that compliments the opposite Tapo sensors properly.

It’s a excellent pairing with the Kasa KE100 radiator valve, because it permits you to get correct temperature readings for the place you sit.


  • Affrodable and correct sensor
  • Pairs properly with the KE100 for correct room heating


  • I had some points importing the hub and sensor with Matter into House Assistant