The Orbit Max High Flow Metal Mechanical Tap Timer works just like an egg timer. Twist the dial to the desired watering duration up to 2 hours and the timer will turn itself off. The mechanical operation requires no batteries and makes this one of the easiest and quickest timers to use. It has a large dial with both timed watering and manual watering options. Timed watering can be set from 15 to 120 minutes. Features Suitable for Australian 15mm garden taps No programming - simply turn the dial 2 Hours / 120 minute maximum Range of 15 to 120 minutes Large dial with on/off or timed watering Mechanical operation, requires no batteries Changes your garden tap into an automatic sprinkler location Ideal for lawns and gardens Durable high impact metal construction Blue, Silver & Black Inlet size: 20mm (3/4”) BSPF Suits 15mm Australian Garden Taps Product code: 94012 Steps for turning off this manual tap timer 1. Press the lever in2. Whilst pressing the lever in, wind the dial back to ‘Manual On’3. When the dial is at ‘Manual On’, release the lever4. Wind the dial back to ‘0’ so the lever clicks and the tap timer will turn off