output circuit PNP light source pulsed infrared diode height / length 28 mm protection class IP 50 voltage drop Vd < 1 VDC connection types cable 3 pin, 2 m type rectangular max. outer diameter of the pipe / tube 8 ... 13 mm width / diameter 16 mm wave length 950 nm current consumption max. (no load) 25 mA output function light / dark operate switchable max. thickness of the pipe / tube 1 mm short circuit protection yes housing material PC output current < 100 mA voltage supply range +Vs 9 ... 30,8 VDC reverse polarity protection yes response time / release time < 2 ms operating temperature -10 ... +55 °C depth 26 mm sensitivity adjustment no manufacter SKU FFDK 16P50Y0 type liquid level sensor output indicator LED red