NeverDie
Senior Member
Or, maybe they are, and I just haven't seen product?
I picked up a red laser pointer at the store the other day for $1, with batteries included. It looks exactly like this:
The build quality is awful, but it works! Yet, I haven't seen cheap electric eyes using lasers... Why not? Wouldn't it deliver longer range? With a few mirrors you could cheaply zig-zag all over the place. Handy for perimeter coverage? Or is it too much of an installation hassle? Or does it have to do with the "Danger" sticker that's on it? If so, at what power setting would it no longer be a danger?
For comparison, I notice these Seco-Larm retroreflector electric eyes are fairly inexpensive ($41.50) and seem to have a decent range (35 feet):
http://www.discounthomeautomation.com/Seco-Larm-Enforcer-Reflective-Beam-Sensor-SEE931S35RRQ?catargetid=120154320000144283&cadevice=c&gclid=CjwKEAjwwN-rBRD-oMzT6aO_wGwSJABwEIkJyv5HmOEhIXV2qsc4_em3q1UG9J0LydQxTpFs-izFehoCUOnw_wcB
The Amazon reviews are generally positive about it. However, I presume having more than one in the same vicinity would interfere with one another. Is that correct?
Which situations call for the use of an electric eye, instead of PIR or something else?
I picked up a red laser pointer at the store the other day for $1, with batteries included. It looks exactly like this:

The build quality is awful, but it works! Yet, I haven't seen cheap electric eyes using lasers... Why not? Wouldn't it deliver longer range? With a few mirrors you could cheaply zig-zag all over the place. Handy for perimeter coverage? Or is it too much of an installation hassle? Or does it have to do with the "Danger" sticker that's on it? If so, at what power setting would it no longer be a danger?
For comparison, I notice these Seco-Larm retroreflector electric eyes are fairly inexpensive ($41.50) and seem to have a decent range (35 feet):

http://www.discounthomeautomation.com/Seco-Larm-Enforcer-Reflective-Beam-Sensor-SEE931S35RRQ?catargetid=120154320000144283&cadevice=c&gclid=CjwKEAjwwN-rBRD-oMzT6aO_wGwSJABwEIkJyv5HmOEhIXV2qsc4_em3q1UG9J0LydQxTpFs-izFehoCUOnw_wcB
The Amazon reviews are generally positive about it. However, I presume having more than one in the same vicinity would interfere with one another. Is that correct?
Which situations call for the use of an electric eye, instead of PIR or something else?