The ysi Pro-Series provides plug-and-play capabilities for you to build your meter. The Pro1030 pH/ORP/conductivity meter can be customized by ordering meter, probes, and cables) required for your application. Features include backlit graphic display and glow-in-the-dark keypad, helpful user prompts available in several user-selectable languages, SMART calibration for easy calibration routines, and a 50 data set memory. Rugged rubber Over-molded case offers durable military Spec connectors (locking bayonet-style). unit is impact-resistant and IP67-rated for waterproof - even without the battery lid. User-replaceable sensors for pH and ORP, and cables (from 1 to 30 m) with built-in weighted 4-electrode conductivity sensor with temperature are available for the meter. Rugged and reliable meter ideal for field work backlit graphic display with glow-in-the-dark keypad - even visible while wearing polarized sunglasses SMART calibration remembers previous calibration settings tough, impact-resistant, IP67-rated waterproof housing.