OTIS Leveling Sensor GBA22439E2 GEN2 Traction Belt PRS Headreader Precise Floor Position & Speed Detection Original Elevator Spare Parts

Precise Floor Leveling (Core Role)
Reads magnetic strip data on the GEN2 traction belt, delivering real-time absolute position feedback to the main controller. Achieves ±1mm ultra-precise leveling, eliminating tripping hazards and improving passenger safety & comfort.
Real-Time Speed Monitoring
Detects belt movement speed and direction, providing high-resolution speed signals to the drive system. Ensures smooth start, constant-speed operation, and jerk-free stopping, preventing elevator shaking or swaying.
Position Reference & Calibration
Acts as the elevator’s primary position reference, enabling the control system to calculate floor height, change-speed points, and terminal limits. Critical for preventing overtravel, top landing, or bottoming risks.

Fault Diagnosis & System Protection
Monitors signal integrity in real time; triggers fault alarms & safety stops for abnormal signals (e.g., sensor failure, belt deviation). Supports predictive maintenance, reducing downtime and repair costs.
Perfect Compatibility with GEN2 System
Original OTIS part, 100% compatible with GEN2 controllers and inverters. No complex calibration needed after replacement—plug-and-play, ideal for hotels, offices, residential buildings, and hospitals.

Xi’an Sulab Machinery Co., Ltd is committed to providing our customers with the highest quality elevator and escalator parts in the most timely and professional manner. The main brands are Otis, KONE, Sigma, Hyundai, , etc. There are also elevator and escalator spare parts of Chinese brands such as Canny, BLT and IFE. We also do OEM of escalators and moving walks, as well as modernization of elevators.

Our basic premise in building our business is to help our customers meet their requirements by providing exceptional customer service, competitive prices and quality OEM parts. We provide our valued customers with elevators and escalators with the best quality and competitive prices.

At the same time we also focus on modernizing our customers, but this is probably the best solution for those old elevator maintenance today. This not only solves high-value routine maintenance issues, but also extends the life of the elevator. Customers are our greatest asset, and we promise to all our customers that we will act with fairness, integrity and respect for everyone. We encourage and advocate innovation and creativity to serve every customer better than any competitor with value-for-money products and services. So far, we have successfully sold many elevator products to North America, South America, Middle East, Southeast Asia, Africa, Europe and other countries.

Xi'an Sulab Machinery Co., Ltd. uses excellent labels and packaging labels when delivering goods; carton boxes for light items; fumigation-free wooden boxes for heavy items; according to the urgency of customer needs and cost needs, using the most suitable delivery way to ship the parts. After delivery, write customers of the courier number and the latest logistics status in timely. When the goods nearly arrive at the destination place, remind the customer to contact the local express company or forwarder to make the custom clearance, so as to obtain the goods as soon as possible. We pay much attention to the order details. Before delivery, we will check and confirm the product information and pictures with the customer, after customer approval, then arrange the delivery.

Professional service,high quality parts and products,quick delivery, reasonable price,no after-care purchasing experience. No matter where you are,we will work with you to create a better future together.

Welcome to know more about us and look forward to cooperating with you.