CT3500 S2 - Honeywell
CT3500 S2
Similar Questions
What Is The S1 And S2 Connections On An Rth8500 Thermostat
what are the s1 and s2 connections used for there is a grey wire connected to the s2 connection
what are the s1 and s2 connections used for there is a grey wire connected to the s2 connection
(Posted by m2623 12 years ago)