Features: Large LCD displays pH or mV and Temperature simultaneously Microprocessor provides for Automatic Buffer recognition Memory stores 25 readings Automatic Temperature Compensation Unit is completely waterproof when electrode is connected to the meter Low Battery indicator and Auto Power off Includes cabled pH electrode, protective holster, pH buffers and 9V battery Accessories: PH4-P - 4pH Buffer Solution (2 Bottles) PH7-P - 7pH Buffer Solution (2 Bottles) PH10-P - 10pH Buffer Solution (2 Bottles) PH103 - Tripak Buffer Pouches (4, 7 and 10pH plus rinse solution) 650470 - Tripak Dry Powder Buffer Capsules (4, 7 and 10pH) 6015WC - Waterproof pH Electrode for Palm pH 6012WS - Waterproof pH Electrode for Palm pH Specifications: Type: Cabled pH Electrode | Stick pH Electrode pH: 0.00 to 14.00pH Temperature: 32° to 212°F (0 to 99.9°C) Max Resolution: 0.01pH, 0.1° Basic Accuracy: ±0.01pH, ±0.8°F/0.5°C Dimensions/ Weight: 4.4x3.1x1.5" (111x79x39mm)/ 9.2 oz (260g) The Extech PH220-C pH Meter is a Palm pH with Cabled Electrode. Microprocessor provides for Automatic Buffer recognition. Memory stores 25 readings. Large LCD displays pH or mV and temperature simultaneously. Includes cabled pH electrode, protective holster, pH buffers and 9V battery.