The Gardena Control Unit 9 V Bluetooth is used to control the Gardena Irrigation Valve 9 V and can be easily set from a distance of up to 10 m from the device via the Gardena Bluetooth App on a smartphone or tablet. Six different watering schedules are possible for which time, duration and days of the week can be set. Status LEDs provide information about the Bluetooth connection, battery status and watering. 'Water Now' Function: If watering is to be started immediately, it can be activated manually without changing any settings. For retrofitting Gardena 9 V Irrigation Valves Art. 1251. Replaces 9 V control unit and programming unit. Can be used with Gardena Soil Moisture Sensor.