Waree instruments presents digital differential pressure. These transmitters are [series ms] manufactured by dwyer instruments, inc, usa. They come in an industrial nema 4x enclosure withstanding temperature up to 66 c. Also, they are 2-wire or 3-wire units featuring one per cent full- scale accuracy. Numerous ranges are available, from 0.1" wc up to 5" wc. These transmitter are perfect for building automation applications because of the price to performance ratio and features like selectable measurement unit, pressure ranges, square root output for air velocity mode and inbuilt lcd display. These pressure transmitters also have a mode selection for pressure and air velocity. The digital differential pressure transmitters are perfect for monitoring differential pressures or air velocity in hvac applications such as rooftop air handling units, heating equipment, filtration units and large building maintenance.