Needs movement to switch it on, 25 Feb. 2015

Clever device but only comes on if you move the shower-head about - so don't expect it to show temperature if your shower-head is fixed. Once on, it will continue to display temp and if 38 deg C or more the red warning will flash. After your shower it switches itself off to save battery.

This review is from: Safety First 33110042 Shower Thermometer (Baby Product)