Digital watering timer Gardena 1874-20

The GARDENA Digital watering timer 1874-20 (Water Computer MultiControl duo) controls irrigation for two separate garden areas with individual programming for each outlet. Each outlet allows selection of start time, duration and frequency, with up to three watering cycles per day and a maximum run time of 3 h 59 min per cycle. The unit is powered by a single 9 V alkaline battery (not included) and fits outdoor taps with 26.5 mm (G 3/4) and 33.3 mm (G1) threads, operating at 0.5–12 bar. The detachable control panel and large display provide step-by-step, easy programming and clear viewing of all settings. A battery level indicator shows when replacement is needed.

Advantages

The dual-outlet design enables independent irrigation schedules for two areas, such as a lawn and a flower bed. Intuitive button operation and a detachable control panel make programming quick and accessible. Compatibility with GARDENA Rain and Soil Moisture Sensors allows automatic suspension of irrigation when rain begins or soil moisture is sufficient, reducing water use. The device supports night programme activation via a connected soil moisture sensor and offers a clear battery status indicator.

Suitable for

• Irrigating two separate garden zones (e.g., front flower bed and rear lawn)
• Garden taps with 26.5 mm (G 3/4) or 33.3 mm (G1) thread
• Automatic sensor-controlled watering with GARDENA Rain or Soil Moisture Sensors

Key specifications

• Model: GARDENA Water Computer MultiControl duo, MPN 1874-20
• EAN: 4078500187404
• Outlets: 2 individually programmable
• Cycles per outlet: up to 3 per day
• Maximum duration per cycle: 3 h 59 min
• Compatible tap threads: 26.5 mm (G 3/4), 33.3 mm (G1)
• Operating pressure: 0.5–12 bar
• Power: 1 × 9 V alkaline battery (not included), approx. 1 year runtime

How to use

Attach the Water Computer to a compatible outdoor tap, insert a 9 V alkaline battery and mount the detachable control panel for programming. For each outlet set the start time, duration (up to 3 h 59 min) and frequency, and choose up to three cycles per day if required. If using sensors, connect a GARDENA Rain Sensor or Soil Moisture Sensor to the desired outlet(s) to enable automatic interruption when rain begins or soil moisture is sufficient. Use the large display and push-button controls to review and modify settings; the battery indicator will notify when battery replacement is needed.

Usage recommendations

For water-efficient irrigation, pair each outlet with a GARDENA Rain Sensor or Soil Moisture Sensor and prefer early-morning or night watering schedules to minimize evaporation and avoid peak water pressure fluctuations.