If lawn and flower pots should be watered during vacations, 2 channels are sent. So you can goats with different time intervals. The computer is easily programmable. Even the neighbor understands him after 10min briefing for emergencies. Also sent is the direct activation: Just press a button and the computer will open for exactly 30 minutes. Thus the spontaneous casting can be easily done. The battery will last from my experience throughout the season. Caution: Much moisture on the device (no rain protection), the battery coupling tongues heavily corroded. Why would a covered Zapf Square well or other protective solution. Warranty documents can pick up and throw in the fall critical look inside the case. Experience: 6 months with this device. No experience with other devices. Would buy again.