The Hozelock Sensor Controller is a tap-mounted watering controller that automatically waters every day at sunrise, sunset, or both - the best time to water the garden.The controller is easy to set up and it automatically adjusts its daily watering schedule to coincide with the changing time of sunrise and sunset. The watering time can be selected from 2, 5, 10, 20, 30 or 60 minutes, for different weather conditions. In addition, the controller features a 'Water Now' button for 60 minutes of watering at any time.The connector has a battery status LED that indicates the strength of the remaining battery. A built-in safety feature detects when the battery levels have dropped to a level that could fail whilst a watering schedule is in progress.Supplied with a choice of 21mm (1/2in BSP), 26.5mm (3/4in BSP) or 33.3mm (1in BSP) adaptors for connection to most garden taps.Requires 2 x AA batteries (not supplied).Control connection Size: 1-inch BSP, 1/2-inch BSP, 3/4-inch BSP