Interesting item. Once placed in series with shower it generates it’s own electricity in order to power a thermometer circuit. Useful to know temperature before going inside the shower box. Unfortunately, after three months of daily basis use, it has stucked on 89.5 grads and no more measure the water temperature. Now, after one year, as the body is of chromed plastic, it has broken the thread and fallen on the head of person that was bathing. As said, the idea is very good but used materials and circuit are too fragile.
Online store: AliExpress
US $11.59 40% OFF|LW 101 LED Display Home Water Shower Thermometer Flow Self Generating Electricity Water Temperture Meter Monitor For Baby Care-in Water Thermometers from Mother & Kids on Aliexpress.com | Alibaba Group
11.59 USD