Is it necessary to take the transmitter off when having a shower or can you leave it attached? If you do take it off, how do you go about re starting the transmission again?
Sorry if I was not clear - you do not need to take it off nor stop it when you shower or bathe.
If however you get too much water in between the sensor and the Transmitter, you can either unclip the transmitter and dry it off then clip it back into the sensor (after the shower/bath).
Or you can use a hair dryer without removing anything to dry around them both.
In both the above do not stop the transmitter.
One last word of caution, nothing to do with this subject, if you remove the transmitter from the Sensor then do not try to remove the Sensor from you otherwise the sensor pin can become dislodged and remain inserted in you. When removing the sensor always ensure the Transmitter is clipped into it.