Oase Proficlear Guard With automatic water replenishment you sustainably assure a constant water level. This is recommended for stable operation of a gravity fed filter system, such as the ProfiClear. In addition your pond remains eye-catching. Trouble free level detection thanks to a conductive sensor Full setup flexibility through 20 m sensor cable Solenoid valve closes automatically if there is a power outage Complete set consisting of control system, ½” solenoid valve and conductive level detection Sensor can be shortened to 10 mm switching differential Sensor sensitivity is adjustable Integrate switching hysteresis to prevent undesired replenishment through waves LED status display for the solenoid valve The control system can be mounted on a wall Including sensor fastening element for projecting pond edges Servo-controlled 230 V brass solenoid valve (splash proof installation required)