Feature: 1. Mini online EC conductivity monitor with LED display screen, clear and intuitive display of data, easy to use and operate. 2. With automatic temperature compensation function, easy to calibrate, high reliability, practical and durable to use. 3. The measurement range is 0‑199.9mS/cm, high accuracy, the resolution is 0.1mS/cm, and the accuracy is ±2%F.S. 4. Conductivity tester, widely used in aquariums, aquaculture, laboratories, chemical reactions, water treatment, etc. 5. Small size, light weight, easy to carry, using high quality ABS material, wear resistant, corrosion resistant, long term use. Specification: Item Type: EC Monitor Material: ABS Model: EC-1383B Battery: 4 x 1.5V LR44 Battery (Battery Not Included) Uses: Aquariums, aquaculture, laboratories, chemical reactions, water treatment, etc. Basic Parameters: Range: 0-199.9mS/cm Resolution: 0.1mS/cm Accuracy: ±2%F.S Working Temperature: 0℃-50℃ Ambient Temperature: 0℃-50℃. Package List: 1 x Online EC Monitor (Battery Not Included)1 x Power Adapter1 x Screwdriver1 x Fixed Bracket1 x Double Sided Hook and Loop Fastener1 x Manual Note: 1. Stir the electrode gently during operation, and don't let any blisters on the electrode.2. To ensure measurement accuracy, please do not recalibrate at will.3. If there are abnormal phenomena such as large measurement deviation, measurement value flickering, non return to zero, etc., please immerse the electrode in ethanol to clean it.