• 12VDC or 24VDC selectable output. • 10 amp of continuous supply current. • Transformer requirements: - 28VAC/175VA for 12VDC @ 10 amp output (Altronix Model # T2428175). - 28VAC/175VA for 24VDC @ 6 amp output (Altronix Model # T2428175). - 28VAC/300VA for 24VDC @ 10 amp output (Altronix Model # T28300). • Filtered and electronically regulated outputs. • Short circuit and thermal overload protection. • Built-in charger for sealed lead acid or gel type battery backup. • Maximum charge current .7 amp. • Zero voltage drop upon transfer to battery backup. • AC input and DC output LED indicators. • AC fail supervision (form "C" contact rated @ 1 amp 28VDC). • Low battery and battery presence supervision (form "C" contact rated @ 1 amp 28VDC). • Lifetime Warranty.