Tonight was sensor change day for me, so I ran an experiment. Based on @Jay6‘s suggestion to use an old fashioned beer can opener, I altered and simplified my proposed “helper”.
Here is a picture of a paint can opener which is basically a metal rod with a little hook on the end of it. You can find them for less than a dollar is just about any paint store or hardware store. If you don’t want to run the risk of going shopping, send me your mailing address in a PRIVATE MESSAGE and I will send you one … I happen to have two, so it will not inconvenience me in the least.
In the second picture, I have the just-removed sensor (weighed down by a bottle of liquid soap instead of my thumb so that I could take the picture). As you can see, the sensor is hanging over the edge of my bathroom vanity and the hook of the paint can opener is hanging on the clear plastic that surrounds the transmitter. Note: I am not hanging it on the little plastic tab.
To snap the ring, I simply held the sensor with one thumb, grabbed the paint can opener with my other hand, held it so that the beer can opener end of the opener was about 30 degrees away from the vanity (so that the hook grabbed the plastic a bit better) and pulled down until the plastic snapped.
I hope that this may help you with sensor changes … and let me know if you’d like me to send you my spare paint can opener.