SPECIFICATIONS pH Range: 0 to 14.00 pH (620 mV to -620mV); 0 to 100°C. Resolution: 0.01 pH, 0.1°C Calibration pH: 2 or 3 point Accuracy: ±0.03 pH; ±0.5 C Display: 4-digit, LED, 13.7 mm (0.54") Relays: dual SPDT (form C) 5 A at 240 Vac, mechanical relay. Programmable deadband hysteresis around setpoints. Output: 4 to 20 mA, 0 to 20 mA or 0 to 10 V (Scalable) Software selectable. Input Impedance: >10 12 ohms Temperature Compensation: Manual or Automatic, 0 to 100°C using Pt 100 or 1K ohm RTD Connectors: pH: BNC; Temperature: Terminal strip Power: 115 Vac, 230 Vac, 50/60 Hz; 12-32 Vdc