The GLL170-P333 manufactured by Sick is an optical fibre amplifier with PNP, IP66, 10-30V DC and 2000Hz. It has a number of features, including a wide supply voltage range, high switching frequency and an autonomous status indication for change of state and error condition. In addition, it has high voltage insulation between input and output, and is compatible with IO-Link for remote control. The highly reliable Sensor employs optical fibre technology, providing long sensing distances, safety, and immunity to dirt, dust and other particles. The IP66 rating ensures that the Sensor can be used in applications with harsh environmental conditions.