F
Frank
- Jan 1, 1970
- 0
Why not use Safe-T Beams, the kind that come on all garage door
openers, for use as perimeter detection? Someone crosses the beam, an
alarm is triggered. Seems like a cheap way to go for up to 20'
distances.
Has anyone tried this?
I'm assuming that these emit a voltage drop across the wires when the
beam is crossed, which could then easily be connected to a JK
flip-flop or some other circuit, but I can't find any tech data on
them.
openers, for use as perimeter detection? Someone crosses the beam, an
alarm is triggered. Seems like a cheap way to go for up to 20'
distances.
Has anyone tried this?
I'm assuming that these emit a voltage drop across the wires when the
beam is crossed, which could then easily be connected to a JK
flip-flop or some other circuit, but I can't find any tech data on
them.