The STYRAX “Differential Pressure Indicator” is specially designed to indicate the pressure difference between two different areas. Features : Advanced Microcontroller based DP measurement. Software programmable channel ranges, units & resolution. 4 Digit, 0.56” bright LED display for displaying differential pressure. Process parameter status indication with LEDs. Process value ... https://www.styraxinstruments.com/digital-differential-pressure-indicators-in-hyderabad-digital-relative-humidity-indicator-manufacturers-digital-temperature-rh-dp-indicator-suppliers.html