What is the purpose of a door hold open lamp?

The purpose of a door hold open lamp is to indicate that a door is in a hold position. This lamp serves as a visual cue for passengers and service personnel, making it clear that the door will not automatically close. This is particularly important in situations where the door is intended to remain open for loading and unloading, or for safety reasons. By providing this indication, the lamp helps ensure the safe and efficient use of the elevator, preventing unintended closures while passengers are entering or exiting. This functionality is essential in maintaining proper elevator operation and safety protocols.