The KH keeper from Reef Factory is an advanced alkalinity testing device that offers complete automation with ± 0.01 dKH accuracy. It provides daily readings every 1-12 hours and tracks historical alkalinity measurements, allowing for faster detection of potential issues and greater water chemistry stability for your aquarium inhabitants. With smart notifications for alkalinity issues and concentrated reagents that can be refilled easily, the KH keeper is a cost-effective solution for maintaining optimal alkalinity levels. Additionally, it can be used in conjunction with Reef Factory dosing pumps to automatically adjust levels or to turn them off if the KH level is too high or low. This compact device has a supply voltage of 100-240 V AC 50/60 Hz and consumes 5W with a maximum of 24W. Included in the package is the KH keeper, along with a 10ml and 100ml graduated cylinder, silicone tubing, power supply, resetting magnet, and pH 4 & 7 calibration packets.