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Re: diy microwave alarm

Subject: Re: diy microwave alarm
From: G. Morgan <sealteam6@xxxxxxxxxxxxxxxxx>
Date: Sat, 03 May 2014 01:28:52 -0500
Newsgroups: alt.security.alarms
References: <53604b38$0$44925$862e30e2@xxxxxxxxxxx> <3l65m99vsfb6c9jon97auipl0li7c2t8ks@xxxxxxxxxxxxxxxxx> <5362dc24$0$44953$862e30e2@xxxxxxxxxxx> <2er7m95os2pdk30gvrbjqbetu5oga8kff1@xxxxxxxxxxxxxxxxx> <53646b26$0$44851$862e30e2@xxxxxxxxxxx>

joe hey Wrote:

>On Fri, 02 May 2014 14:11:30 -0500, G. Morgan wrote:
>
>> joe hey Wrote:
>>
>>>(What is a 'PE beam'?)
>>
>> Photo-electric
>
>PE beams would be fine if they could span about 200 m in heavy rain.

You would need an array, and if CCTV breaks the budget than PE beams are
out of the question.

--

They who can give up essential liberty to obtain a little temporary safety,
 deserve neither liberty nor safety. - Ben Franklin

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