REFRIGERANT LEAK SENSOR PRE-TRIP SEQUENCE AND DIAGNOSTICS
RESISTANCE-BASED INSPECTION OF ELEVATOR SYSTEM SUPPORT MEMBERS
SYSTEMS AND METHODS FOR DETERMINING ACTUAL OPERATING CONDITIONS OF FLEET CARS
NON-CONTACT TIME-OF-FLIGHT FUEL LEVEL SENSOR USING PLASTIC OPTICAL FIBER
Elevator gesture recognition calling landing device and method
Elevator group control mode intelligent scheduling method and system
Elevator steel wire rope fault judgment method and system based on tension monitor technology
Automatic elevator disinfection control method and system
Lift car fault judgement method and system based on multi-axis sensor technology