Features: Online water quality detector: TDS value detection for tap water online, with built-in three-way interfaces. Digital display screen, clear numerical values for easy reading. Sensors interfaces: detachable sensors interfaces, easy to carry. Detachable High Sensitivity Probes: A high-precisions and sensitive sensing probes that detects water quality and automatically compensates for temperature, reducing errors. The overall designs is compact and precise, and the back is easy to install and use with adhesive sticker. Specifications: Material:ABS Ranges:0-9990ppm Accuracy:2% Size:Approx.76mm/2.99''x47mm/1.85''x20mm/0.79'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x TDS Monitor