Simplex 502X Pushbutton Cylindrical Lock w/ Knob or Lever Combination Entry-Key Override-Exterior Combination Change
Simplex 503X Pushbutton Cylindrical Lock w/ Knob or Lever Combination Entry-Key Override-Interior Combination Change-D.O.D. Compliant
Simplex 504X Pushbutton Cylindrical Lock w/ Knob or Lever Combination Entry-Key Override-Exterior Combination Change-Passage
Simplex 505X Pushbutton Cylindrical Lock w/ Knob or Lever Combination Entry-Key Override-Exterior Combination Change-D.O.D. Compliant-Passage