Mechanical Push Buttons Access Control > Mechanical Push Buttons    EE1000 Series Mechanical Pushbutton Lock Double sided The EE1000 Series lock provides fully mechanical pushbutton access control with no electrical wiring, or batteries. This entry/egress lockset provides access control on both sides of the door by combination, each side accepts an independent code for added security. Door Thickness: 1-3/8" to 2-1/4" thick. Knob Models are field reversible for use on left or right hand doors.