Features: Made of superb p lastic material, it is long-lasting use. Clear reading and it designed with 5 mins auto shut down for energy-saving. 3 in 1, EC/ TDS/temperature measurement, reading locking function, one price for multiuse. Operated by built-in cell, mini size and lightweight for better use experience. Nice for the measuring of drinking water, laboratory, industrial waste water, aquarium, swimming pool, aquaculture, rice fields, etc. Specifications: Material: P lastic Color: White P ower s upply: 1 * 3V 240mAh CR2032 Cell(Included) Measurement Range: TDS: 0-9999ppm EC: 0-9999US / c m Temperature: 0.1~80.0℃ (32.0-176.0℉) Accuracy: ±2% Package Size: Approx. 160*30*30mm Package Weight: Approx. 100g Packing List: 1 * Water Quality Analyzer 1 * User Manual (English)