Designed for three main users: home users who want to ensure drinking water safety, aquarium enthusiasts who protect pet health, and researchers conducting water experiments. Comprehensive water analysis with an online conductivity tester featuring a doubleprobe design (DM1 and DM2) for simultaneous measurement of multiple parameters. Durable ABS housing with waterproof performance, built to withstand humid environments and provide reliable service across different applications. for use in household tap water testing, aquarium management, and laboratory research, delivering realtime data to support informed decision making. Use scenarios Home use: verify tap water quality for drinking, cooking, and everyday use. Aquarium care: monitor water parameters to maintain a healthy environment for fish and other aquatic life. Laboratory work: obtain realtime conductivity data to support waterrelated experiments and analyses.