In the late 1980s, Beck established itself in the ventilation and air conditioning market with an adjustable differential pressure switch for monitoring air filters and fans. In 2000, Beck rounded out its product range for this now important market with a transmitter for differential pressure, further strengthening the company's global market position. At the same time, Beck still sees itself as a flexible niche provider of customer-specific pressure switches and pressure transmitters for OEM suppliers in many different industries. This great diversification in sales markets can be considered an important factor for the company's international market success.