"EC" Type Keypad Series Functions * Electronic digital control with override system,batteries compartment outside * Rectangle deadbolt (2-cylinder deadbolts optional) * Equipped with high quality burglary-resistance device * Changeable code and manage system * Wall mounting hole and hardware preserved * Epoxy powder coating * Plastic film keyboard, easy to operate * Keyless knob open * Four 1.5V type-D(LR20) batteries