Monnit ALTA Wireless Differential Air Pressure Sensor - Line Power Only (900 MHz) - for Hospital, Building, Duct Pressure, Air Flow, Variable Air Volume Filter Status, Clean Room, Fume Hood, Computer Room

The ALTA wireless differential pressure sensor measures the pressure difference between two input ports and transmits the measurement to iMonnit. When viewing the sensor from the top, the right inlet port is the negative or low side pressure input. When the pressure on this port is greater than the left port the sensor produces a negative pressure reading. When the pressure is greater on the left port the sensor produces a positive pressure reading.