EMS D10 Relay Clicking

[d10auser]

I have an EMS D10 that I purchased recently, from a builder who bought it some time ago, but it has never been installed in an aircraft.

I bench tested it and it appears to be working fine, but I am curious about the fact I can hear a sound like a relay clicking on and off every few seconds.

Is this normal behaviour, and what is it?

I wondered if it was some kind of external alarm relay or similar.

 

[Dynon]

It's normal, and part of a self-calibration feature of that generation of EMS products.

 

[d10auser]

Thanks, that’s reassuring