Gardena Irrigation - Gardena Water Controls - Water Timer T 1030 Card - Gardena 1830-28 Ref: GRD1830 Switches on and off automatically. Easy programming using the card. Child-safe card storage. Up to 3 watering programs a day. Watering time from 1-180 minutes. Water Timer operates approx. 1 year with 4 x 1.5 V alkaline batteries (not included). GARDENA Rain Sensor and Soil Moisture Sensor can be connected. For taps with 26.5 mm (G 3/4) and 33.3 mm (G 1) thread. Operating pressure 0-12 bar. £53.99