I think the sensor is the square black thing above the blue box in the picture in step 4

No, I haven’t attempted opening it

Hi, I have several of these and I’m looking at ways to make them more usable as they should measure the temperature of the room, not the radiator. I have a couple of questions:

- what kind of temperature sensor does it use? Can it be desoldered and moved away from the valve for a better reading

- can the motor be disconnected? If so, does the valve still work as an external temperature sensor when placed in the same room as another valve?

I had to replace this part on my 5S because the proximity sensor wasn't working; camera and light sensor were working fine

I ordered like 7 of these on ebay and I think none of them were fully working; on five of them the light sensor wasn't working (even after a hard reset the auto brightness switch wasn't available), one even prevented the phone from booting (google for red screen on boot); the only one on which the light sensor was indeed working, had a bad camera (image was blurred) and this was the only one that had a soft spongy adhesive on the rear of the connector like the original

I start to think that the ones on ebay (price from 3 to 8 £) haven't passed some kind of quality control and might fix one issue but give you another one for sure (that most people won't realize)