We are offering series a1/a2 digital differential pressure gauge. Mounts in industry standard holes universal power 16-265 vacvdc accuracy 1% (better available) large 0.5″ led display weatherproof face 5 selectable engineering units opti.link ™ optional 4-20 ma output filter status duct static pressure clean room pressure building pressure fan blower pressure paint booths dust collectors glove box pressure bubbler systems laminar flow hoods cabinet purging