1/4 DIN panel mount pH/ORP controller/transmitter with dual SPDT Hi/Lo relays, manual set points and calibration are via potentiometers. Features a 4 to 20 mA current output and has an external pH/ORP select switch. Display is a large LCD. Connectors are a BNC and spade lug screw type connector blocks. Meter requires a Pt-100 ATC or a simulation resistor for temperature. Power 115/230 V AC.

• Isolated 4 to 20 mA output
• Dual on/off relays
• Large LCD display
• ATC
• 115 V AC/230 V AC operations
• Compact 1/4 DIN case
• Low power solid state design
• Front panel acid/base influent select switch
• Front panel high/low relay format select switch