The STEP External Call Display Board SM-04-VRF(VRK) comes in two versions: standard protocol and custom protocol. The standard protocol is compatible with over 80% of elevators. When purchasing, please provide the elevator protocol for matching. The elevator display screen is an installation inside or outside the elevator that provides information and indicators related to the elevator. It plays a crucial role in conveying information to passengers about the elevator's status, direction of movement, and floor position.
