Mobotix MX-S14-OPT-MK-EX Extension for Sensor Module is designed especially for S14D. This module can be easily mounted directly onto the sensor module or a previously mounted extension. This 1.6" sensor module is designed for larger mounting depths and increases the installation depth. It also incorporates a two-year warranty to put all doubts to rest. 1x extension 40 mm/1.6 inch, increases the installation depth Suitable for all (screwable) S1x sensor modules Can be mounted directly onto the sensor modules themselves or onto existing extensions