The valid hardware versions for DSB and DSF are:
Type Setting range in barPressure transducer made of brass for non-aggressive media, for temperatures up to70 °C
DSB 138 F001 0...1.6
DSB 140 F001 10...2.5
DSB 143 F001 0...6
DSB 146 F001 0...10
DSB 152 F001 6...16
DSB 158 F001 0...25
DSB 170 F001 5...40
Pressure transducer made of stainless steel for aggressive media, for temperatures up to110 °C
DSF 125 F001 -1...1.5
DSF 127 F001 -1...5
DSF 135 F001 0...0.6
DSF 138 F001 0...1.6
DSF 140 F001 0...2.5
DSF 143 F001 0...6
DSF 146 F001 0...10
DSF 152 F001 0...16
DSF 158 F001 0...25
DSF 170 F001 15...40

The valid device variants for DSL and DSH are:
Type Setting range in bar
Locks when the pressure falls (SDBF); pressure transducer made of brass for non-aggressive media, for temperatures up to 70 °C
DSL 140 F001 0...2.5
DSL 143 F001 0...6
DSL 152 F001 6...16
Locks when the pressure increases (SDB); pressure transducer made of stainless steel foraggressive media, for temperatures up to 110 °C
DSH 127 F001 -1...5
DSH 143 F001 0.5...6
DSH 146 F001 1...10
DSH 152 F001 2...16
DSH 158 F001 5...25
DSH 170 F001 15...40