LM14 Inductive Proximity Switch Wide voltagerange High on-off frequency Dust proof,vibration proof, ... voltage and output type: dc6~36v(npn, pnp, dc two line) and ac 90~250v(scr, output). 2.npn, pnp and ... dc two line can be equipped with the following model(lm18, lm22, lm24 ... drop(ac/dc): dc< 3v, ac LM14 cylinder type Proximity Switch