YSI IDS 4120 Probe

Single channel input with wireless capability for pH, ORP, optical-Based DO/BOD, or conductivity.

Two-channel input with wireless capability for pH, ORP, DO/BOD, and conductivity, and built-in OUR/SOUR calculations.

Three-channel input with wireless capability for pH, ORP, DO/BOD, and conductivity, and built-in OUR/SOUR calculations.

Two channel input for pH, ORP, optical-based DO/BOD, or conductivity, large, easy to read color display.

Three channel input for pH, ORP, Optical-Based DO/BOD, or conductivity, antibacterial keypad, large, easy to read color display.