9V AC-AC Power Adapter 1110mA (1.11A) | 2.1mm x 5.5mm Right-Angle Plug | AC-091A

9V AC-AC Linear Wall Transformer — 1110mA (1.11A)

Part AC-091A

The AC-091A is a wall-mount linear AC-to-AC power adapter delivering 9V AC output at 1110mA (1.11A). Its 2.1mm x 5.5mm right-angle barrel plug helps with equipment mounted in racks or positioned close to walls. Use this adapter only when your device specifically requires 9VAC alternating current (~) and the connector dimensions match.

⚠️ Important: This is a non-regulated AC-AC adapter that outputs 9VAC, not DC. Before ordering, confirm your device label shows 9VAC or the ~ symbol and that it uses a 2.1mm x 5.5mm right-angle connector. The output may measure higher than 9V with no load, which is normal for this type of transformer.

Technical Specifications

• Model: AC-091A
• Input: 120V AC, 60Hz
• Output: 9V AC at 1110mA (1.11A)
• Connector: 2.1mm (ID) x 5.5mm (OD) right-angle female barrel plug
• Type: Wall-mount linear transformer (non-regulated)
• Safety: UL/cUL Listed

Common Use Cases & Compatible Devices

• Specialty Audio Equipment: Equipment that specifically requires 9VAC and a 2.1mm x 5.5mm connector
• Rack and Wall-Adjacent Equipment: Devices where a right-angle plug helps provide clearance around the power port
• Specialty Control and Security Equipment: Equipment requiring 9VAC input and no more than 1110mA

Common Replacement Compatibility

Use as a replacement only when the original adapter or device label specifies 9VAC, a compatible 2.1mm x 5.5mm connector, and current requirements of no more than 1110mA (1.11A). Confirm the connector fit, right-angle clearance, and AC output requirement before connecting.

Frequently Asked Questions

Q: How do I know if my device needs AC or DC?
A: AC is shown by the ~ symbol or the letters VAC. DC is shown by VDC or the DC symbol. This adapter is not for DC-only devices.

Q: Will the right-angle plug fit my device?
A: Confirm the connector measurements, 2.1mm inside diameter and 5.5mm outside diameter, along with the available clearance around the power port.

Q: Why can a voltmeter show more than 9V?
A: This is a non-regulated linear transformer. Its no-load voltage can measure higher than the rated output until a device is connected.

Q: What should I verify before ordering?
A: Confirm that your device requires 9VAC, accepts up to 1.11A, and uses a 2.1mm x 5.5mm right-angle barrel connection.