Reply To: Questions about moving from HAI OmniStat to Aprilaire 88xx

[Moshe Katz]

I finally got everything together to do this project, so I’m starting to report back in case anyone else can use this information:

Yes, any generic RS485/RS422 to RS232 converter will work, not just the Aprilaire 8811.

I used this one: https://www.amazon.com/dp/B0196AO1IG/

Wiring:

• A+ (org) to T/R+
• A- (org/wht) to T/R-
• B+ (blu) to RXD+
• B- (blu/wht) to RXD-