ʻO WP401A ka mea hoʻouna kaomi ʻenehana maʻamau, e hui pū ana i nā mea sensor i lawe ʻia mai me ka hoʻohui ʻana i ka mokuʻāina paʻa a me ka ʻenehana diaphragm hoʻokaʻawale, ua hoʻolālā ʻia e hana maʻalahi i nā kūlana like ʻole, e lilo ia i koho versatile a hilinaʻi no nā ʻano noiʻi ʻoihana.
ʻO ka gauge a me ka mīkini paʻi paʻi paʻa he ʻano o nā hōʻailona hoʻopuka me 4-20mA (2-wire) a me RS-485, a me ka mana anti-interference ikaika e hōʻoia i ke ana pololei a kūlike. ʻO kāna hale alumini a me ka pahu hui e hāʻawi i ka lōʻihi a me ka pale, ʻoiai kahi hōʻike kūloko koho e hoʻohui i ka ʻoluʻolu a me ka hiki.