REQUIRES 2 LR14 BATTERIES-The Hozelock Select Controller is a battery-powered automatic garden watering system designed to help you conserve water and prevent overwatering. With 16 preset programs to choose from and the ability to work at low pressure, this watering timer ensures your plants get the ideal amount of water. The package includes a 1-year manufacturer warranty, making it a reliable choice for outdoor watering needs. Compatible with various connection sizes, including 1 inch BSP, 1/2 inch BSP, and 3/4 inch BSP, this Hozelock product is suitable for use with outside water taps and water butts.