The second generation Eberspaecher Airtronic S2/M2 Air Heater is designed to feature both functional expansions and a longer service life with its robust components and the latest control system. The S2/M2 is equipped with automatic altitude adjustment as standard and a brushless motor that has extended the service life to 5,000 hours. The motor, a modern control system, and the use of the latest metering pump technology also improve the acoustics. In addition, the stepless heat output control enables the air heater to operate efficiently and quietly.