The GLL170-P332 is an optical fibre amplifier, manufactured by Sick, that features a PNP connection, and is IP66 rated. It has a connection lead of 2m and functions as a sensor. The optical fiber amplifier is used in photoelectric or fibre optic sensors for sensing of surveillance, monitoring, and setting of control signals. Its PNP connection allows for it to be used with a wide variety of input signals, offering digital switching, and indirect analog amplifying. The IP66 rating means that the GLL170-P332 optical fibre amplifier is dustproof and waterproof and suited to function in wet environments, such as outdoor installations or in tunnels. Finally, the 2m connection lead ensures easy installation and high reliability when utilized in continuous operations.