Dental Equipment Hydraulic Chair Main Board for AJ15/AJ16 Hydraulic Chair Main Board AJ15/AJ16 Chair ControlHydraulic Chair Main Board for AJ15/AJ16, Part Number A121705 $1.00 Request a Quote System Overview The Hydraulic Chair Main Board is designed for controlling hydraulic functions in AJ15/AJ16 chairs. It ensures precise and reliable operation of various chair components. Standard Features Control for Hydraulic Functions Compatible with AJ15/AJ16 Chairs Reliable Operation