Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.

As New York City continues recovering from a historic winter storm that dumped nearly two feet of snow in parts of the five boroughs, most services have resumed Tuesday — though impacts remain and ...

New York City is largely returning to normal Tuesday after a winter storm dumped heavy snow across the region over the weekend, though some lingering disruptions remain as crews continue cleanup ...

I solved the problem of leaving my garage door open with a low-cost gadget and an Alexa routine.