The Bosch Rexroth R900033823 VT-VSPA1-1-1X is an analog valve amplifier module (control amplifier) designed to drive Rexroth proportional valves in hydraulic systems. It operates from a 24 V DC supply, delivers valve currents from 0.8 A to 1.6 A, and accepts input signals of +10 V or 4–20 mA, with a 32-pin male connector and front panel; the unit weighs about 210.6 g. Compatible valve families include 3DREM, DBE, DBEM, DBEP, and DRE series in multiple sizes (for example 3DREM 10 P to 6X, DBE 6 to 1X, DRE 6 to 1X, DRE 10 to 5X, DRE 20 to 5X, DRE 30 to 4X, DBEM 10 to 5X, DBEP 6 A/B to 1X).
