This is Temji, a dial you fix to your shower faucet that allows you to select your preferred water temperature instantly. My life would vastly improve if I just had the ability to have a consistent temperature. It’s always either nips-so-hard-they-could-cut-diamonds-cold or boob-scalding-hot. I’ve nursed way too many third degree burns just because the a-hole who lives downstairs continuously flushes the toilet when I shower. He does it on purpose. I think he’s held a grudge ever since that time he caught me puking in a potted plant outside the elevator. He’s never treated me the same since.