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Yes, most lift doors have a sensor — but not all, and not the same type. How to tell what your door has in three checks, and what the sensor still cannot cover.
Do Elevator Doors Have Sensors? The Straight Answer
What an elevator ARD is, how the automatic rescue device works, what 220V and 380V models mean, how to size one for your lift, and what drives the price.
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Most explanations of how an elevator traction machine works say the same thing: the motor turns a wheel, the wheel moves the ropes, the car goes up. That is true, but it skips the part that actually explains the machine.
A traction machine does not wind the ropes onto a drum. It grips them.
A traction machine does not wind the ropes onto a drum. It grips them.
How an Elevator Traction Machine Works
Elevator door sensor types fall into five groups: infrared light curtains, photo eyes, mechanical safety edges, ultrasonic sensors, and 3D sensors. This guide covers each type, how to identify the one you already have, and which to choose.
Elevator Door Sensor Types: How to Identify and Choose