The existing Ecobee put in takes advantage of the PEK because I do think you'll find only four or 5 wires going in the thermostat towards the furnace but I am able to fairly conveniently insert far more wires if necessary to get 2 levels (thermostat is nearly straight higher https://copyright-dosage37911.snack-blog.com/35769298/copyright-vs-other-weight-loss-medications-secrets