The mechanical sprinkler timer allows you to operate 2 sprinklers at once plus a standard hose pipe thanks to the 3 water outlets. 2 of the outlets feature a 120 minute timer so you can set your watering duration using the simple dial from between 15 to 120 minutes, the sprinkler will automatically switch off after the required amount of time,alternatively you can set the timer to Manual On for continuous watering. The third outlet has a stopdial so that you can water your plants with a standard hose pipe while 2 sprinklers are working, the hose pipe can be switched off independently of the sprinklers. The timer is mechanical so no power or batteries are needed to make it work making it extra safe for outdoor use. Simply connect the timer to your standard outdoor tap and attach sprinklers and/or a hose pipes to the 3 water outlets.