... .5m,15m,30m,daytime,nighttime and 24 hours.2. With light sensor3.Power source: two AA ... of ABS resin, which anti-corrosion and durable.2. Scientifically and functionally design of electronic machine, circuit ... automatically spray every 15 minutes or half an hour.2. Using at home, you may set in ... place such as: office, bank, hospital, school, etc.2. Public amenities and amusing building such as: hotel, ...