The 4911 PSU provides up to 5A continuous smoothed and regulated 12V nominal DC output, sufficient for four fully populated 4101-2 Controllers without providing lock power. Alternatively it can supply one fully populated Controller and up to 3.2A further load which represents eight locks each drawing 400mA continuously or 500mA with an 80% duty ratio.

There is a 12V/24V converter module (4915) which can be used to provide 24V DC auxiliary output at 1.28A. This is equivalent to eight locks each drawing 160mA continuously or 200mA with an 80% duty ratio.

The 4911 PSU does not include battery.

The PSU can be purchased with the battery by ordering it as a 4910.