[RE-wrenches] Off Grid Alarm Communicator

[Bill Loesch]

Hi Carl,

We too provided power to a home owner for an alarm system (and more) for a
remote vacation cabin in the heart of meth. country several years ago. The
cabin had previous wiring provisions for lighting, etc. on one 15A AC
circuit, when occupied, so this is not a carbon copy of your requirements.
My take away from this experience was to prohibit the alarm company from
keeping their (traditional AC SLA) backup battery in place if you choose to
use a flooded system and it is properly designed, as Jeff says, with no low
power shutdown during the worst weather.

In this application, a local bell/horn also sounds during alarm conditions
for much more than two minutes, as I remember.

Wiser and more efficient next time,

Bill Loesch
Solar 1 - Saint Louis Solar


----- Original Message ----- 
From: "Carl Adams" <swingjunkie at gmail.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Sent: Thursday, November 24, 2011 6:29 AM
Subject: [RE-wrenches] Off Grid Alarm Communicator


> Hello Wrenches,
>
> I had a request from a local alarm company for a small PV - Battery
> system to power an alarm communicator system.  The parameters given
> are as follows
>
> 12 V DC power supply to the gear
> standby load 28 mA - this is the majority of the time
> Operation peak load 2A for 2 minutes - once per day for communications
> check and as required for alarm condition report
>
> Have any of you provided such a system and if so could you share your
> recommendations for a cost effective solution.
>
> With Regards
> Carl Adams
> SunRock Solar
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