JHA Series for Persons with Physical Disabilities JHA SERIES FOR PERSONS WITH PHYSICAL DISABILITIES The NON-PROPRIETARY controllers of the JHA series are designed to control hydraulic lifts for persons with physical disabilities. They are designed using logic relay circuits or industrial programmable logic controllers, so they are easy to maintain and to troubleshoot. Download brochure Download form CHARACTERISTICS Single or three phase supply from 208 to 600 volts; Emergency lowering by battery or UPS; Fixed or motorized cam sequence; Relay logic circuit without electronic cards. MODELS JHA-1000 Logic relay circuit controller at 120VAC and emergency lowering by a 12VDC battery. JHA-1001 Logic relay circuit controller at 120VAC and emergency lowering by UPS at 120VAC. JHA-2000 PLC-based controller at 120VAC and lowering by a 12VDC battery. JHA-4000 Logic relay circuit controller at 24VDC with up and down option with 24VDC battery, hydraulic or screw elevators.