... principle, proximity probe, proximity switch2.power voltage and output type: dc6~36v(npn, pnp, dc two line) and ac ... 2.npn, pnp and dc two line can be equipped with the following model(lm18, lm22, lm24, lm30);scr is ... available in all models3. testing distance: in shield type: 5mm(lm18), 7mm(lm22), 8mm(lm24), 10mm(lm30); ... output voltage drop(ac/dc): dc< 3v, ac LM14 cylinder type Proximity Switch