Von Duprin/Schlage PS902-2RS Base Power Supply (2A @ 12/24 VDC)

The Schlage comprehensive line of power supplies and option boards was
designed to address the changing needs of the access control market.
Installation is simplified by utilizing a flat mounting design and polarized
locking connectors for option boards. This design eliminates the need
for racks and side connectors. The flat mounting of the option boards
also provides for easier access to the terminal blocks for connection of
electrified devices (such as electrified strikes, electromagnetic locks, card
readers, etc.).
Common to the line of PS900 Series power supplies is a constant output
rating at both 12v and 24v settings, universal 120 VAC to 240 VAC input,
and polarized option board connectors. New fire alarm interface board
mounting allows outputs to be configured as switched (power cut) or
unswitched (power continues) when signal is provided.