Opengrow - TankbotIndispensable as a nutrients and pH controller, water tank level manager or even a security system. It can control any 12v actuators like water valves or peristaltic pumps, while also analyzing the water solution in your tank thanks to the pH, EC, Temperature and water level sensors. Refill the tank, recycle the water and even automatically control the nutrients and pH. Includes: 1 TankBot 1 pH Probe 1 Water Soil Air temperature sensor 1 4 pin