You step into a modern building and the door is already opening, be it by sliding or folding, before you have a mind to put your hand on the handle. A Caesar door system will do that for you. It is as it should be. There is no reason to fumble with something heavy when you are lugging in groceries or managing a stroller. We have had automatic systems to take care of that for decades, and they have only become more sophisticated.

But what you don’t hear is that an automatic door is not simply a motor fixed to some hinges. It is an ecosystem of its own, with sensors, safety switches and controllers all in concert. Take one element out of the equation and you have a problem. Put it together properly and the door becomes unobtrusive, which is precisely the aim. You shouldn’t have to think about the door until you are using it.

The Brain of the Operation

People tend to look at the motor first. They can be forgiven; it is the muscle after all. Yet the sensor is the brain, and a strong muscle with a dim brain is a recipe for trouble. It is the motion and presence detectors, the safety beams, that call the shots on when to open and when to stop. If a sensor is not up to par it will either leave someone stranded in the doorway or make a show of opening for a pigeon.

There is some thought required in how you place them. Angle, height, sensitivity – it all has to be right. Otherwise you end up with a door that is triggered by a shopping cart three aisles down or one that turns a blind eye to a wheelchair user at its threshold.

The Unexciting Parts Are What Count

Then there are fire codes, battery backups and emergency breakouts. Not much to get worked up over in conversation, but they separate a sound building from a lawsuit. Should the power fail, the door must have a fail-safe. Be it a manual override or a spring-loaded release, it cannot be “most of the time,” it has to work every time.

And maintenance is not to be overlooked. A door seen to twice a year won’t let you down at an inopportune moment. Let it go for three years and it will likely come back to bite you, and at a price.

A Matter of Fit

The requirements vary by venue. An airport expects a door to put in thousands of cycles daily without issue. A hospital needs one to part for a gurney on the spot. A retailer wants to be welcoming to foot traffic, not slam on those who are in no hurry. Each calls for its own level of speed and sensitivity.

Install the wrong system in the wrong space and you might as well have put bicycle brakes on a truck. In theory it is a brake; in practice it is a disaster. One has to consider the cost, certainly, but skimping on the hardware is a move that looks good on paper until the motor gives out in the dead of winter.