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Re: USB module for monitoring multiple on/off switches

Subject: Re: USB module for monitoring multiple on/off switches
From: "Josepi" <JRM@xxxxxxxxxxxx>
Date: Thu, 22 Oct 2009 19:51:31 -0400
Newsgroups: comp.home.automation
References: <q76dnXyb3JEGC33XnZ2dnUVZ_i2dnZ2d@xxxxxxxxxxxx> <4ae0cbf3$0$89394$815e3792@xxxxxxxxxxxxxx> <fo2dnYYWE7lUR33XnZ2dnUVZ_oGdnZ2d@xxxxxxxxxxxx>

RS-485 is a two wire serial port that can support multi-drop peripherals.
Translator adapters RS232/RS485 can be purchased for about $25.


"Christopher Glaeser" <nospam@xxxxxxxxxx> wrote in message
news:fo2dnYYWE7lUR33XnZ2dnUVZ_oGdnZ2d@xxxxxxxxxxxxxxx
>> Why USB?  It can be done almost directly with a serial ...
>
> Directly, as in one port?  I need to monitor multiple alarms and need
> multiple ports, as in 8 or more.
>
> Best,
> Christopher
>
>

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- USB module for monitoring multiple on/off switches
  - From: Christopher Glaeser
- Re: USB module for monitoring multiple on/off switches
  - From: J Miller
- Re: USB module for monitoring multiple on/off switches
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