The Bluelab Combo Plus Meter is a convenient, all-in-one portable solution for accurately measuring pH, conductivity and temperature in nutrient solution. The battery-powered, lightweight unit can be used anywhere, anytime to measure critical parameters related to nutrient uptake in plants. It features an easy-to-read backlit screen for lowlight environments and simple push button operation to view your chosen parameter. The detachable Bluelab Leap pH Probe has a toughened spear-tip for improved durability. The probe allows fast and accurate pH measurements direct from the rootzone in a wide range of growing media including soil, rockwool, coco coir and potting mixes. Team this unit with the Bluelab Carry Case and Bluelab care and calibration solutions for optimal performance. Probe cable lengths: 2 meters/6.5 ft. Five-year repair or replacement guarantee on the meter; six months for pH Probe.