TP-LinkKasa Smart Thermostat Radiator Valve, Smart Radiator Valve, Energy Saving, LED display Radiator Thermostat Valve, Smart TRV Schedule, Works with Alexa & Google, Easy installation(KE100 KIT)

I purchased this hub, which included one smart thermostat valve, together with three more smart thermostat valves, separately purchased.Installing the hub and linking it to Alexa was very easy, and took only minutes to complete.The app is simple to use and straightforward and interfaces very well with Alexa.The thermostats give you an indication of the temperature in the room where they are installed, which I found to be accurate.The easy to read display on the handle clearly shows the temperature you set the thermostat to and the temperature can be easily varied with either the handle or through the app and/or Alexa, or using voice commands, giving you total control on the heating in your home and assisting in making the heating system energy efficient (saving you money by, for example, turning down or off the heat in rooms you do not use a lot).The thermostat handles come with a large number of adapters and are easily to install (although I would advice inserting the batteries before installing the handle on the radiator, particularly if the handles will be placed in difficult to reach positions on your radiators).I found the price to be very good value for money.Recommended, to make your home warm and smart.

Baught 6 of these plus the hub that is needed to connect them to thei Internet.They are easy to install and come with adaptors for most radiator valves. Had one radiator adaptor break but had spares.Batteirs that come with them karnt great and when you connect them it says they are half charged or nearly dead but I had my own double AAs so wasn't a problem.The app is easy to use and it connects easy to the Google home app. Hoping they stand the test of time they seem well built and they adjust on the app quickly so temperature can be adjusted.Haven't set up the schedule features or the geofencing yet but it seems like a very good feature.

I already had the TP-Link Kasa hub (WHICH YOU NEED) and one other kasa TRV (thermostatic radiator valve) so this add-on just allowed me to control another radiator.Comes in a small box with 2 AA batteries, the smart TRV, a host of adaptors for different radiator valves (I've not needed to use) and a little plastic piece to help open the top of the TRV, add batteries and pair the device.Your best adding the TRV using the Kasa phone app and following the instructions but I'll mention the process as it is more detailed than the app. Assuming you've started the add device, picked smart thermostat, given it a name and location the process is basically:In one of the two adaptor bags there is a small white plastic piece with a tiny pin like piece sticking out of it. Turn this on its side and push into slot in top of TRV, then turn anti-clockwise perhaps 20 degrees (there is a lock and unlock symbol with arrows on the top). The top plate should now be removable and a little silver metal piece can be prised up to fit the batteries (note the polarity on the back of the metal piece). Push the silver piece down and forward to lock batteries in place. Use the pin end of the plastic tool to press into the tiny hole in the middle of the top and start the process to connect to the hub. Refit top piece and use little plastic tool to turn the top plate clockwise to lock.Now, I did all of this with the TRV not even connected to a radiator and forgot it has an automatic calibration process where it pushes the radiator valve pin in and lets it out (you'll hear the TRV make a small buzzing noise) to find the amount of travel in your radiator valve. As such at the end of the add device it failed because the calibration did not work because it wasn't connected. I simply removed an old manual TRV (after first turning it to fully on[5] to make it easier to unscrew the collar) and replaced it with the Kasa TRV then restarted the calibration under settings for the new TRV (it is best to do this with the smart TRV valve turned off or you're attempting to push the radiator valve pin in as you tighten it up).It is easy to set up schedules and temperatures in the kasa app and you can also add the TRV to your google home. At any time you can turn the top of the TRV to see the temperature setting, WIFI connectivity etc and if you stop and turn it again, you are adjusting the temperature up/down.One last thing to remember. WHen you screw the TRV on to your radiator valve make sure the lock/unlock symbols on the top point into your room or you won't be able to see the display on the side of the TRV.I've had a few of the forerunner to these smart TRVs for over 10 years (the ones with no internet connectivity or phone app but which are programmable with a small handset). My biggest bug bear with the old ones (other than the one time programming) is the noise they made and the length of time it took to open or close the radiator valve. These TP-Link TRVs are a massive improvement. They make a barely audible buzz for at most a couple of seconds to fully open or close the valve (I can hear it if I'm awake but no way would it wake me up). You can also put them in night mode where they avoid oscillating open and closed all the time (not that ours do that anyway).