* Digital pH meter, ORP meter * 2-point Push-button Calibration * Large Displayer with Message Indicators * Accuracy: 0.002pH ... liquids, its measuring accuracy up to +/-0.002pH.Multi-point Push-button Calibration:BANTE922 meter has 2 point calibration mode. From setup ... )mm×60(H)mmWeight: 1.7kgMeter Included:pH Electrode (Made in UK), ORP Electrode, pH Buffers, Temperature Probe, Power Adapter ...