Product overview A single, waterproof digital tester that measures five key water parameters to help you maintain balanced water quickly and with confidence. Designed for use in pools, hot tubs, drinkable water checks, hydroponic systems, aquariums, and swim spas, this 5 in 1 meter combines salinity and pH testing with TDS, EC, and temperature readings so you can make informed adjustments without guesswork. Key benefits Consolidates multiple tools into one device so testing is faster and storage is simpler. Prevents equipment damage and water quality issues by letting you monitor salt levels, pH, conductivity, and dissolved solids before problems escalate. Waterproof design permits safe use around standing water and moist environments. Clear digital readout delivers quick feedback so you spend less time testing and more time maintaining. What it measures Salinity and salt concentration for saltchlorinated pools and spas pH for water balance control TDS for total dissolved solids EC for electrical conductivity related to nutrient levels Temperature to help interpret other readings and track system conditions Practical features Digital display for straightforward numeric readings Compact, portable form for handheld use and easy storage Durable, waterproof construction suitable for wet environments Compatible with a wide range of applications including residential and commercial pools, hot tubs, aquariums, hydroponic setups, and drinking water testing Use scenarios Pool owner with a salt chlorinator: Check salinity and pH before adjusting the chlorinator or adding chemicals to maintain consistent sanitation. Aquarium hobbyist: Monitor TDS, EC, and temperature to protect sensitive fish and corals by keeping water chemistry stable. Hydroponic grower: Track EC and TDS regularly to ensure nutrient solutions remain within target ranges and to adjust feeding schedules. Why choose this meter This tester combines five essential measurements into one waterproof, easy to use device tailored for water maintenance tasks. It reduces the number of separate instruments needed, helps you detect issues earlier, and supports better decision making for water care across multiple environments.