“Same part number, but completely different physical size/layout. It works, but I had to re-route wires. It's a manufacturer issue, not suppliers fault.”
“I received an SR506 that, when powered, burned up the power supply capacitor. Being an electronics designer and engineer, I noticed it had been installed backwards. I replaced the Cap and it's all good. Would have returned the unit for replacement but can't leave people without heat. Never had any other issues.”
“This worked great for my application. I have a 1-zone in-floor radiant heat system from the 60s. All I needed to control is a 12VAC gas valve for the boiler and the 120VAC circulation pump. The Taco relay did the job.”
