Solid State Relays take something like 30 mA.  

From: Paul McCall 
Sent: Tuesday, April 10, 2018 11:45 AM
Subject: Re: [AFMUG] Sitemonitor Question with Relay

But, is the relay switching in the Packetflux bearing any of the load at any 
point?   I would think not, but the answers are a bit confusing, as though it 


I would think most basic relays could be triggered successfully with much less 
than 2A


From: Af <> On Behalf Of Forrest Christian (List Account)
Sent: Tuesday, April 10, 2018 1:44 PM
To: af <>
Subject: Re: [AFMUG] Sitemonitor Question with Relay


The relay is rated for 2A@30V, and 60W above that. 


See figure 1 on 
page 3 for a visual of this. 


I'd recommend that you test the relay operation with an ohm meter before trying 
a circuit.  There should be conductivity between C and NC and none between C 
and NO when the value is set to zero, and opposite  that when it's set to a 


If it doesn't work,  upgrade the firmware to the latest and try again. There 
have been a couple of relay bugs fixed in recent memory.   Also make sure that 
the relay on above and below rows  are set to a very high and low number since 
if that is enabled it will override the relay.


On Tue, Apr 10, 2018, 11:22 AM Paul McCall <> wrote:

  Yeah,  I thought this would be the case, for some reason, Packetflux support 
led my guy to realize that it didn’t work that way. 




  From: Af <> On Behalf Of Bill Prince
  Sent: Tuesday, April 10, 2018 12:38 PM
  To: Motorola III <>
  Subject: Re: [AFMUG] Sitemonitor Question with Relay


  The typical solution with a light-duty relay is to use it to control a 
heavier relay that carries the actual load.






  On Tue, Apr 10, 2018 at 9:24 AM, Paul McCall <> wrote:

    Yes, we know that, and have used it on lighter loads.  But, apparently 
there is a challenge on a heavier load as we described below.  Wanting to know 
if we can do what we want and maybe we just have the wrong external relay

    -----Original Message-----
    From: Af <> On Behalf Of Christopher Tyler
    Sent: Tuesday, April 10, 2018 12:20 PM
    Subject: Re: [AFMUG] Sitemonitor Question with Relay

    Yes, there is a relay output on the siteMonitor II that you can trigger via 
SNMP or web interface.

    Christopher Tyler
    Total Highspeed Internet Services

    ----- Original Message -----
    From: "Paul McCall" <>
    Sent: Tuesday, April 10, 2018 11:11:20 AM
    Subject: [AFMUG] Sitemonitor Question with Relay

    My service manager seems to be struggling with using the Sitemonitor Relay 
contact to trigger a 48 Relay that we want to use to power cycle the whole 
tower if necessary.  So, Packetflux states that the Relay control is maximum. 
30v 1amp.  So a little more than half the amps at 48v.

    So, in the past (lighter loads on towers) we used this to trigger an 
external relay and "open" the ground to the main power feed going up the tower. 
 At 48v, we sometimes are around 2amp on the bigger towers, some perhaps a bit 
higher still.  (with a 48v relay).

    We should be able to use the Sitemonitor to somehow accomplish it.

    Can anybody comment on this?


    Paul McCall, President
    PDMNet, Inc. / Florida Broadband, Inc.
    658 Old Dixie Highway
    Vero Beach, FL 32962


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