OTTO, a high-quality 2-way radio accessory manufacturer from Carpentersville, IL recently introduced a high-temperature purpose-built shoulder microphone for the fire service. The OTTO 500 is designed to function in 500 degree heat for 5 minutes and also fully-submerged underwater for a half hour. 

The OTTO 500 is available for most radio models including Motorola, Harris, Kenwood, Icom, and EFJ. A removable grill makes it easy to clean and has a replaceable debris screen. The PTT is easy to use when wearing gloves and most models have an emergency button. The OTTO 500 has a 3 year warranty and is a good choice for extreme fireground operations.