Ubee Switching Adapter DSA-12G-12 AUS AC/DC Adapter  12V 1A

Unsure what this power adapter originally paired with, but these power supplies are commonly used with many devices.  Adapters are lightly used, if at all, and were tested with voltmeter.

Input: 100-120V ~ 0.3A 50-60Hz

Output 12V -- 1A

Polarity: Positive