Input specification for Aver EH1116H sensor inputs?

[trfish 0]

Hello,

I recently purchased an Aver EH1116H-4 DVR. I would like to hook up a third party motion sensor and trigger recording when the motion sensor detects activity. The motion sensor provides NO/NC relay outputs, as well as a +12vdc signal when motion is detected. The Aver DVR says it supports sensor inputs, but doesn't state the maximum allowable voltage. Can I just hook the 12vdc signal from the motion sensor directly to one of the four sensor inputs? Or is it looking for typical TTL voltage levels (i.e. 0 to 5v)? From what I can tell, just using the relay outputs from the motion sensor won't work, since when I test the trigger input with nothing connected it says it's "low".

 

Thanks!

[trfish 0]

I'm a bit bummed out here. I've been on hold with Aver's customer support chat line for an hour and still haven't gotten through to someone. I'm hoping that once I do they can provide this info. If they do I'll post it here.

[tomcctv 190]

Hi best off using the NC/NO to alarm inputs.

 

 

for testing i would use the mobile app to switch on and off

[trfish 0]

Thanks Tom,

Right after I posted I called them and got through immediately. I was told the the inputs take 6vdc max.

 

I would prefer to use a NC/NO connection, but it looks like the 4 inputs on the back of the EH1116H expect a voltage input rather than a relay contact connection.

 

The motion detectors receiver has 4 zones with 4 different NC/NO trigger outputs, but only one +12vdc output.

[tomcctv 190]

hi. they also take NO/NC ......you can also set cameras as alarm inputs.

[trfish 0]

That would be great, but I don't know how to do that. The 4 sensor inputs are marked 1 2 G 3 4 G. The NO/NC connections are an output of the box, so I shouldn't connect them there.

 

Are you saying that if I just connect a relay's NC or NO between one of the 4 inputs and one of the G terminals, that I can trigger it by tripping that relay? (I know I have to set whether it's normally high or low in the GUI, but I thought that meant I had to drive a voltage, not just a contact closure)

 

Thanks for all your help....

[trfish 0]

Tom: thanks for the tip on just using NO/NC connections. When I got home I tried it and it works fine. What originally confused me was that the "normal" state of the DVRs sensor input with nothing connected is shown as "low" on the sensor test dialog box. When I connected the sensor input to one of the DVRs ground pins, the test display showed "high". This is opposite what I would have expected, but as long as it changes state that's all I need to make this work.