LK series (for low speed control) For use on the following scanners: PD60LA

PB series (for high speed control) For use on the following scanners: PV60SRG PT60SRG

LC series (for medium speed control) For use on the following scanners: PD60LA PD60HR

PGDS series (speed controlable) For use on the following scanners: PD60LA PD60HR PT60SRG