The Chemtrol PortaProbe is a versatile 4-in-1 digital portable tester and simulator designed for use with all Chemtrol controllers. It features a 3-1/2 inch LCD display and is powered by a 9 VDC battery, making it a practical tool for both testing and simulation. As a tester, it independently reads signals from ORP, pH, conductivity, and temperature sensors, providing comprehensive data at your fingertips. The simulator function generates sensor signals to verify the proper operation of controllers, including ORP, pH, temperature, and conductivity simulators, with all necessary coaxial cables included. Ideal for checkout and troubleshooting, the PortaProbe ensures your Chemtrol systems operate flawlessly.