18V AC-AC Power Adapter, 1000mA (1A) Wall Transformer, 2.1mm x 5.5mm Plug, AC18V Linear Power Supply

Model: AC-181A Input: 120V AC, 60Hz (Standard US Wall Outlet) Output: 18V AC @ 1000mA (1 Amp) Connector: 2.1mm (ID) x 5.5mm (OD) Straight Barrel Plug Type: Linear Wall-Mount Transformer This specific 18VAC rating is commonly used in: Audio Equipment: Professional pre-amps, mixers, and guitar multi-effects pedals (e.g., certain legacy Digitech or Line 6 gear). Security Systems: Control panels, door chimes, and certain CCTV camera heaters. HVAC & Smart Home: Powering specialized thermostats or irrigation controllers. Networking: Specific older modems or industrial routers that use AC voltage. Common Replacement For: Audio: Many Alesis, Digitech, and Rocktron rack units and pedals. Security: Replacement for common 18VAC 20VA/40VA alarm transformers. Note: Fits standard 2.1mm DC-style jacks but provides AC current. Note to Buyers: Ensure your device requires AC output (~) and not DC output (⎓). Using an AC-AC adapter on a DC-only device can cause permanent damage.