The Arrow 400 series alarms offer an exit device option to our alarm hardware line to help create a full line of door hardware solutions to meet the needs of your specific application. 9 V battery powered. Rolled steel touchbar assembly to fit 30" (762.0 mm) to 36" (914.40 mm) door. For outward swinging doors 1-3/4" (44.45 mm) thick with 4" (101.60 mm) minimum stile. Inside cylinder operation to arm or disarm unit using a 1-1/8" (28.57 mm) mortise cylinder. Reversible handing, unit is packed RHRB. 3/4"(19.05mm) latchbolt monitored by an electronic sensor switch. Any unauthorized movement of the latchbolt will cause the unit to go into alarm. Piercing, dual frequency pulsating horns. Rated for 90 decibels at 6 feet. Alarm sounds for two minutes then shuts down and rearms automatically. A 15 second delay feature allows authorized egress without sounding alarm.