The transmitter works very satisfactorily. To present an in-house and outdoor. Most important to me is an accurate temperature measurement. Have the values of the transmitters with each other, were tested with the base station and the other reference thermometers deviation was minimal (0.0 to 0.3 degrees). Tips before going annoyed about the lack of coverage: not only the distance and intervening obstacles play a role! Often all it takes is a slight change of location of the transmitter or receiver. Just try until it works! This is the same with other broadcasters. My transmitter sends any case both by three thick walls (at rather low total distance), as well as further afield in the garden (just a wall). Attention when you first open the battery compartment: For me the lid was glued at both transmitters with the underlying rubber seal downright so opening was difficult. - If that means that the seal and hence the moisture protection is very good, even after reclosure, my hell be right :) Conclusion: you!
