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Remote alarm and dialer?

Discussion in 'Electronic Design' started by DaveC, Jun 14, 2004.

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  1. DaveC

    DaveC Guest

    Water district in remote location requires that the sewage system on
    commercial property (resort) have alarm for equipment failure and be able to
    dial a phone number (the property's manager) so to alert him. If this person
    cannot be reached (ie, respond with a touchtone keypress, or such), a second
    number must be dialed.

    Commercial concerns are estimating $5000 for this setup. The sensor and such
    should be straightforward (float level sensor and/or current flow failure
    sensor). What is involved in getting an automated telephone dialing alert
    system set up?

    Are there such turnkey systems available?

  2. John Fields

    John Fields Guest

  3. Abacus-Ri

    Abacus-Ri Guest

    I'm already have one, working with PLC SIEMENS.

    Contact me if you need more information.
  4. Jim Thompson

    Jim Thompson Guest

    Check with the major paging companies. I know that my oldest son
    wrote software (for numerous different banks) that pages service
    people when ATM's run out of money ;-) This can be set up as a
    wireless link or by telephone.

    ...Jim Thompson
  5. Tam/WB2TT

    Tam/WB2TT Guest


    An outfit name ADEMCO seems to have the corner on home fire/burglar alarm
    systems. They can't cost $500, or even $500. you can trip the alarm with
    either a switch closure, or switch opening. They sell these to people like
    Sentry and ADT. Don't know if there is a capability of dialing an alternate

    Then there is the "I have fallen down, and can't get up" type of system for
    about $100. You could get two, one for each number. RS used to sell these.

  6. $5K? Someone's trying to take you for a ride. See . Nice units. I suspect X10 systems would allow
    you to do this as well.

    ObAnecdote: We had one of these in a data center years ago (Radio Shack used
    to sell them). It would usually go off because the A/C had failed, the
    power was out, or -- most often -- because someone left the cover open on
    the impact printer (kids, an "impact printer" is what we USED to use for
    making marks on paper...). In the last case, the robot (as we called it)
    would start making calls, and would usually reach me at home (I worked the
    late shift). I'd pick up and it would say, "This is telephone number 7 0 3
    n n x x x x x, the noise level is high, listen to the noise level for 15
    seconds" and switch on its external mic. By that point, the folks in the
    room had usually noticed the machine dialing, and so what you'd hear is
    someone saying, "What's that?" "****, we set the robot off again..." and
    suchlike. But that's not the real anecdote.

    The robot was on the only analog phone in the place (for obvious reasons).
    But that phone -- unlisted, or at least unpublished -- would ring several
    times a day, far too often for random wrong numbers. Since it was stuck on
    a wall behind the mainframe, we never managed to pick it up in time, but
    always wondered.

    Then one night, be 3AM, I was driving home and heard an ad for a suicide
    hotline. I almost drove off the road when the ad said the number: 301
    nnx-xxxx: the same number in the adjacent metro area code! So here's some
    poor bastard at the end of his rope, manages to dial the number but in the
    wrong area code, and gets a robot saying, "This is telephone number 7 0 3 n
    n x x x x x. The temperature is OK. The power is OK. The noise level is
    OK ..."

    As one wag put it, "At least it wasn't Nike headquarters, saying 'Just do

  7. Youngster. Ptfui. We used chisels and cuiniform.
  8. Fred Bloggs

    Fred Bloggs Guest

    Operative idea here is local district *requirement*- not something to be
    rigged up an amateur like you- stay the hell away from it.
  9. Youngster. Ptfui. We used chisels and cuiniform.

    And I bet THAT would sure set the robot off!!!!

  10. John Fields

    John Fields Guest

  11. Ah, you were in a "right to work" cave. Ours was a "union shop", hence all
    the extra make-work rules. [a]

    [a] explanation for the non usofa'ers: most labor/mgt
    regulation in the US is handled on a local level, that
    is, by the 50 States. In some the unions have the power
    to insist that all workers in a business sign up, as
    a condition of employment, with the union.

    In others, so-called "right to work" states, the unions
    don't have that clout.

    (the "right to work" states are called "right-to-starve"
    ones by the union folk. I'm sure there are similar, if
    opposite, terms used hte other way around)
  12. J. Yazel

    J. Yazel Guest


    Radio Shack has a home security system that sounds like it would fill your
    need. It has an automatic telephone dialler. The only thing that you would
    have to do is to mechanically connect one of the door sensors to a float.

    It costs $150 for the complete system.

    I've been using it for quite a while and it works great.

    I am guessing that it will do what you want. It is up to you to check it

  13. Bob Thomas

    Bob Thomas Guest

    Check out you can cobble something together for a lot less
    than $5,000 bucks. X10 makes a security system that when tripped
    allows a prerecorded message (you record) to be sent. It will call up
    to 4 number and keep trying until it gets one and the message is
    acknowledged. The unit goes for under 100 bucks and is wireless and/or
    can using house wiring for it's units. They have a lot of wireless
    stuff, but if the equipment is on the same primary power feed as the
    house, then X10 will talk over the power wires, no RF, and no extra
    wires to run.

    X10 and X10 3 rd party vendors make every kind of sensor you can think
    of and if one does not exist, X10 has a "dry contact" monitor that you
    can hook anything to for a NC or NO alarm condition. Sensor units
    generally run 50 - 100 bucks each depending on what they need to do.

    Depending on the distance from your equipment to be monitored and the
    nearest phone line with be the last step. If it is a few hundred feet
    then the X10 RF stuff will send the alarm to a master under that might
    be in your house. If it is a long distance you can run wire or get X10
    repeaters, but that would likely not be possible.

    Try to have as little exposed to the equipment or weather as possible,
    or your costs will go way up on weather proof boxes and hardened

    That is about as turnkey is at is likely to get, you can check our
    smarthome also, and there are lots of auto-dialer systems out there in
    the under 100 buck range that can be triggered various ways. I only
    suggested X10 because between X10 and 3rd party X10 parts you can
    probably do this for a few hundred bucks tops in a very easy to
    install and use manner.
  14. the Wiz

    the Wiz Guest

    The X10 home security system can dial 4 numbers to report intrusion. The entry
    sensors are battery powered and use an RF link to the alarm control unit, which
    is AC powered with a battery backup.
    The base system comes with two sensors and is $100 at - and it's
    frequently on sale for $65.

    You could pay my expenses to fly there from Georgia, install and test this
    system, provide a full set of spares - and not come close to $5000 ;-)

    If you would rather have "commercial looking" equipment, someone else mentioned
    Ademco. They were in the business for a long time - I installed some wired
    alarm systems in 1972/3 using a combination of Ademco and custom hardware.
    Their web address now takes you to Honeywell security - - which is mostly access control.

    You might find this device to be what you're looking for:
    It has 4 input channels (monitors 4 different things), dials up to 8 numbers,
    delivers a voice message which can be stopped by a touchtone code, and can send
    digits to a pager. It's $210 and the power supply + backup battery is another

    If you want to discuss this further, use the link in my signature to send email.


    More about me:
    VB3/VB6/C/PowerBasic source code:
    Freeware for the Palm with NS Basic source code:
    Drivers for Pablo graphics tablet and JamCam cameras:
    Email here:
  15. Tam/WB2TT

    Tam/WB2TT Guest

    The original message failed. So I am resending it

    ----- Original Message -----
    I had mentioned ADEMCO. Should point out that there is a big difference in
    operation. The ADEMCO systems I have seen contain, and talk to, a modem. He
    seems to be looking for an audio system like what you are proposing.

  16. thegoons

    thegoons Guest

    About $US1,550 over a CDMA network. Made in Australia, might need to talk
    with CDMA provider to see if they can connect such a device:
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