Altronix SMP3ET Power Supply - One Output 6/12V @ 2.5A + Enclosure & Transformer

Description

These were ordered in bulk but the project has concluded and these are what we have left over.
Some of these have scuffed boxes.
Per manufacturer:
Input
16VDC from TP1640 plug-in transformer.
Output
6VDC or 12VDC selectable output.
2.5A continuous supply current.
Filtered and electronically regulated output.
Short circuit and thermal overload protection.
Battery Backup
Built-in charger for sealed lead acid or gel type batteries.
Automatic switch over to stand-by battery when AC fails.
Battery short circuit protection (circuit breaker).
Visual Indicators
AC input and DC output LED indicators.
Temperature
Operating: 0° C to 49° C (32° F to 120° F).
Storage: - 20° C to 70° C ( - 4° F to 158° F).
Relative Humidity 85% +/- 5%.
BTU/Hr. (approx.):
6VDC: 8 BTU/Hr.
12VDC: 15 BTU/Hr.
System AC input VA requirement:
6VDC/12VDC: 276VA.