Comparison : Item # AX022460, Pulsar Valve Controller, 250kbps SAE J1939
Item # AX022460-03, 2 Bipolar Signal Inputs, Four Outputs Valve Controller, SAE J1939, DIN Rail Mount, 33 Hz
Item # AX022460-04, 2 Bipolar Signal Inputs, Four Outputs Valve Controller, SAE J1939, DIN rail, 75 Hz