RIB® AC Power Supply PSMN300A, Modular, 3-100VA, Multi-Tap 120/240/277/480-24VAC
Multi Tap 120v 208v 240v 277v 480v 60hz Hvac Ul Cul Step Down Class 2 Low Voltage 24v Ac Transformer,Ei Transformer 40va - Buy Ei Doorbell Power Transformer Ul Listed Class 2