IFM Electronics OGS280 through-beam transmitter sensor is made of Metallic alloy, PA, LCP, EPDM housing, PMMA lens. It features DC PNP electrical design, 10 to 30V DC operating voltage, 20mA current consumption. The transmitter emits a fine laser beam which is received by the receiver. The interruption of the laser beam is evaluated. The small beam diameter allows detection of tiny objects and their exact positioning.