These units are Schlage PS902 Alarm Boxes with 900-2RS and 900-FA battery
backup. Additional boards as shown. Never installed. Please see photos.
PLEASE NOTE**You may receive a unit without the original box. At the time of
listing, we have 12 in original cases, and 1 unit without. Best will be sold
first. Please keep this in mind if it may influence your purchasing decision
New old stock. Some units are factory sealed, some are not. Batteries are
older and may not function as a new battery would. Please see photos, ask any