MB Quart Carling Switch Mount Microphone The MB Quart Carling Switch Mount Microphone (Gmr-Mic) offers a sleek and sturdy solution for users seeking a weather-resistant and easy-to-install microphone. Designed to fit perfectly into standard Carling-style switch knockouts, it ensures compatibility with both MB Quart and universal source units thanks to its 3.5mm audio mini jack connection. Boasting an Ip67 rating, it promises resilience and longevity, even in the most challenging environments. Features: Compatible with MB Quart and universal source units Universal installation for standard Carling-style switch knockouts Hole Cut Out (in): 0.8 Wide x 1.3 Height (Standard Carling Switch Knock Out), Unit Dimensions (in): 1.625 High x 0.25 Depth x 1.0 Width Microphone to 3.5mm audio mini jack Ip67 Rating