At TPS we know that working in wet areas is sometimes unavoidable. The 90 series is designed for rugged field applications in wet environments. The enclosure, keypad and connectors are rated to IP65. Chemically resistant, plastic connectors with gold plated contacts are used where possible.TPS uses the latest microprocessor electronics to totally eliminate moving parts in the 90 Series. There are no internal or external adjustments, resulting in excellent long term reliability. All measurements are shown simultaneously on the 80 character display. There is no need to change modes to check any...