SummerAir ECPBT 20 min Timer switch

[scaupman]

A SummerAire model 115RD HRC was installed in my house when built in 2010. I planned to finish the basement later so the installer put venting into the area where a small bathroom would be installed later. I have now finished the bathroom and need a SummerAire model ECPBT 20 min remote timer touch pad. I found out that SummerAire is no longer in business. Does anyone have a used or NOS SummerAire switch or know of another brand that would work?

Thanks in advance for any help.