dretec Waterproof Salt Meter EN-904 Opened for long-term storage, operation confirmed after battery replacement. Washable for hygiene. - Measures up to 5%, allowing for measurement of concentrated sauces like simmered dishes. - Digital display, measures salt concentration in 0.1% increments. Product weight: Approximately 28g Measurement method: Conductivity measurement method Display method: 2-digit digital Display unit: 0.10% Measurement range: 0.1% to 5.0% Probe heat resistance: 115°C Operating temperature/humidity range: 0°C to 40°C, less than 85% RH (without condensation) Auto power off: Approximately 1 minute Waterproof performance: IPX7 Power supply: Lithium battery CR2032 x 1