OmniStat 2 - Clicking Noise

[nemesis]

I have just installed my first OmniStat RC2000 and tested it.  Each time the OmniStat turns the air conditioning on and each time it turns it off there is a very audible double click heard from it.  Is this normal?

 

[neillt]

All of the new OmniStats I have seen do it.  Two clicks for AC, one click for Heat.  The relays are just beefy and loud I guess.

 

[nemesis]

Sounds good, just wanted to make sure there wasn't a defect.  Thank you for the quick reply!!

 

[jlipsit]

I just installed 3 and was very disappointed how loud these relays are. Loud enough to wake me in the master bedroom.