The sensor has isolation against humidity. Actual size : d: 19mm x h:12mm. For easy installation try : Clarinet and Saxophone Metallic adaptor for (Microphone) Sensor installation. The item "Microphone for clarinet and saxophone TC-R" is in sale since Sunday, March 4, 2018. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Parts & Accessories\Other Accessories".The seller is "traditionalgreekmusicinstruments" and is located in Heraklion, Heraklion. This item can be shipped worldwide.