Refex - Model PRO 2 Wire Ex -pH Meter

Wiring Connections: CLEAR Wire on REFEX Electrode - Terminal A. GREEN Wire on REFEX Electrode - Terminal B. BLUE Wire on REFEX Electrode - Terminal C. COPPER BRAID on REFEX Electrode-Terminal K. RED Wire on REFEX Electrode - Terminal H. WHITE Wire on REFEX Electrode - Terminal I