The Schlage Orbit Satin Chrome Commercial Entry Door Knob is perfect for use on exterior doors where extra security is needed. The Orbit knob design features a versatile modern design appropriate for contemporary homes or light commercial applications. Our Satin Chrome's subtle luster is edgy and alluring. The knob unlocks when the door is opened from the inside, allowing you to leave quickly and conveniently and re-enter easily. Plus, it was designed and tested with strength and durability in mind.