General description Test the pH level and temperature of water solutions with this 2X PH Meter Replacement Electrode Probe. It features a data hold function for easy reading and is designed for various applications including aquariums, hydroponics, and swimming pools. Technical specifications Color: White Material: Plastic Measurement allowed error: +/- 1-3 cm Waterproof rating: IP65 Compatibility and accessories Compatible with PH818 pH meter Includes 2 replacement probes Installation Easy to replace with an insert type probe Usage Suitable for water sources, soilless culture, aquariums, hydroponics, laboratories, spas, and swimming pools Pocket-sized and lightweight for portability Features a switchable backlight and large LCD display for easy reading Automatic Temperature Compensation (ATC) and automatic calibration functions Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.