The 918D-ST-SL is a thin-profile, wand detector with a sturdy metal housing. Features include integrated calibration-data storage, built-in OD3 attenuation filter with automatic On/Off detection, and temperature sensing electronics for temperature drift compensation. Incorporating a large area 10 mm X 10 mm Silicon photodiode, this slim optical sensor is ideal for laser and other optical power measurements in tight locations with busy setups. It is supplied with a NIST traced calibration report that details individual detector responsivity measured with and without attenuator. The DB15 calibration module provides direct compatibility with Newport’s latest power meters (see Compatible product list below).