Marine Meter with IP42 Shell Protection and 2,000V AC Withstanding Voltage Meter mechanism using magnetic structure of the tensile spring wire support, ... in acceleration: ≤0.7g Instrument accuracy: frequency meter is 0.5, power factor meter is 3.0, others is 1.5 ... environment temperature: -25 to +55°C Shell protection in line with IP42, allows smoke, salt, mold, dust and condensation Withstanding ...