The compact CTR-SPD24 pump controller steps-up 12V computer voltage to 24V DC. This allows Koolance PMP-450 and PMP-450S pumps to operate closer to maximum specification. The controller also provides manual speed adjustment from 10-24V DC up to 55W. Dimensions are approximately 3.5" x 1.8" x 1.3" (9cm x 4.6cm x 3.4cm).

A 3 to 4-pin pump adapter, velcro mounting strip, and mounting screws are included.