Re: Overhead Door Magnetic Contact

[Ventura <accordion@xxxxxxx>]

Crash google wrote:
> The best imo is the GE Sentrol 2315, they take two seconds to
> install...they clip on the track. They cost more but definitely low
> maintence.

hehehe i remember as a kid helping out in the Summer
on installs in Pittsburgh... relays and control
units were Vacuum tube devices, and the garage door
"sensors" consisted of plug and socket wiring that got
"pulled apart" if someone opened the door after business hours.

magnets and reed switches were a major breakthrough,
and are still a solid performer after all these years...

amazing

Ciao

Ventura