Filter Minder (Engineered Products Co) introduces the Low Vacuum Sensor for monitoring air filters. It is designed for severe duty service for all types of vehicle and stationary equipment applications. As air filter restriction increases, the sensor gives a comparable voltage output range of 0.5V to 4.5V full scale. The output signal is accurate within +/- 2.5 percent over a temperature range of -40 to 125 degrees C. The sensor is reverse and over-voltage protected. Threaded mounting ports can be supplied with 1/8” pipe thread, 3/8” straight thread, or M-10 metric.