Gardena 1825 Operating Instructions Manual page 4

Battery : For functional safety reasons, only use a 9 V alkali-manga-
nese (alkaline) battery type IEC 6LR61.
The Water Timer will only run for approx. 1 year if the new
alkaline battery has a nominal voltage of at least 9 V.
v Check the battery before you buy it.
Putting your Water Timer To prevent water entering the battery compartment, the Water
into operation : Timer must only be mounted in a perpendicular position with
the sleeve nut pointing upwards.
After you have selected the watering program, the Water Timer
opens at the selected starting time. To avoid getting wet when
operating the Water Timer, connect the hose or turn off the tap
before selecting the program. Alternatively, the control unit can
be removed for programming.
Water flow : The max. temperature for the water is 40 °C.
v Only use clear fresh water.
4