Detachable control panel for easy programming * GARDENA Water Computers and Timers offer a modern attractive design and are easy-to-use. No complicated programming is necessary - all models are simple to use * With GARDENA watering computers or water timers you?ll be in total control wherever you are whenever you want. * A GARDENA /rain or Soil Moisture Sensor (not included) can be connected to each outlet. * Takes one (not included) 12 volt battery. Battery level display shows battery life.