Description: The water quality monitor is professional and useful tool for testing PH/EC/TEMP of solution level. It looks like a pen, and the portable size is great for carrying. Perfect for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school & colleges, swimming pools, water conditions. Features: 3-in-1 meter design. It can be used to measure the pH, EC and temperature of the solution. User-friendly design. Automatic temperature compensation, replaceable electrode probe, easy calibration of pH and EC with a mini-screwdriver. Temperature measuring range between -50℃~70℃, able to withstand harsh conditions, offering longer durable services. Large and clear LCD with backlight, easy to read and accurately measuring functions. Apply in water sources, aquarium, hydroponics, laboratory and scientific testing, spas, swimming pools and other water systems. Pocket-sized design with hanging hole, easy to carry, simple to operate and convenient for storage. Specification: Condition: 100% Brand New Material: ABS Color: Grey Power Supply: DC 6V Battery: 4 * 1.5 V AG - 13 battery(Included) Working Temperature: 0℃~50℃/32℉~122℉ Compensation Temperature: 0℃~50℃/32℉~122℉ Accuracy: PH: ±0.1pH EC: ±2%F.S Temperature: ±1℃ (±2℉) Resolution: PH: 0.01pH EC: 10us/cm Temperature: 0.1℃(0.2℉) Measuring Range: PH: 0.00~14.00pH EC: 0.00~19990us/cm Temperature: -50℃~70℃/-58℉~158℉ Product Size: Approx. 18 x 35mm / 7.1 x 1.4inch Package Weight: Approx. 169g Package Included: 1 x PH/EC/TEMP Meter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.