If you're savvy and want to do a bit more home monitoring, these interesting sensor ideas might be worth trying.

Input/output devices are the interface between the controller and the controlled system. Input devices convert physical quantities to electrical signals, while output devices allow the controller to ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Megan Wollerton After a round of testing we’ve added many new picks: the ...