L3Harris Technologies has expanded its XL platform of Project 25 (P25) radios to include the new XL Extreme™ 400P, the first and only handheld radio designed to meet the most rigorous two-way, portable RF device standards for emergency responder communications. The XL Extreme radio and all new speaker microphone combine to create a solution designed for optimal performance under severe environmental conditions, such as those experienced by firefighters, military personnel and hazmat units. The rugged nature of the device allows the XL Extreme to be suited for any agency with users operating in extreme environments. The XL Extreme 400P has demonstrated ruggedness and uncompromised voice quality, withstanding some of the most punishing testing for two-way portable RF devices, including flame exposure at more than 1,700°F /950°C. The result - heat-resistant thermal materials, a reinforced watertight seal, and unique thermal-rated displays. The XL Extreme delivers clear audio transmission and reception with noise cancellation, operates over multiple broadband networks and includes integrated Wi-Fi®, Bluetooth® and GPS. Built for ease of use, the XL Extreme series offers heavy-duty ergonomics like glove friendly knobs, and a large emergency button as well as customer demanded features like visual group indicator providing quick confirmation that all users are on the same group or channel.