Faceplate: 6-3/8" x 1-1/4"

Fail Secure (FSE) (Standard) - electric strikes require power to be applied to unlock the strike lip. On loss of power, the strike is locked. Field convertible with parts.
Fail Safe (FS) (Optional) - electric strikes require power to be applied to lock the strike lip. On loss of power, the strike is unlocked. Building codes prohibit the use of fail-safe strikes on labeled openings. Field convertible with parts.
Entry Buzzer (EB) (Optional) - Is available for use with fail-secure strikes. Installed in the frame and in parallel with the circuit, the buzzer will sound when the strike is unlocked.
Dual Monitor Switch (DS) - For latch bolt and lock status. Not available on 6221, 6222 & 6225 
Low Current Dual Monitor Switch (DS-LC) - For latch bolt and lock status. 50 mA or less at 24 VDC (Not available on 6221, 6222 & 6225)
12VAC - Converts 12 VAC to 12VDC (For 16 VAC current, use SO24 rectifier kit)
24VAC - Converts 24 VAC to 24VDC

Features:

• Accepts 3⁄4˝ (19mm) Throw Latchbolt Non-handed Horizontally Adjustable Strike box is adjustable to compensate for any misalignment of the door or frame Two piece plug connectors are furnished for ease of installation and for removal during strike servicing.