E3H2 Miniature Sensors Retro-reflective models with two teaching modes for standard and transparent objects Reverse polarity and short-circuit protection Maximum switching current: 45 mA Operating temperature range: -20 → +55 °C E3F2 Series Barrel Output can be configured by wiring either ’light ON’ or ’dark ON’ Built in amplifier Short circuit and reverse polarity protection M18 DIN size cylindrical housing