| 摘要 |
<p>The arrangement comprises a casing (10) for accommodating batteries (131) and a motor (14), with an outlet hole in a lateral surface of the casing. A water pump (20) extends from a floor part of the casing to a tank (70). The water pump is provided to pump water located in the tank through a plumbing (27) and to emit the water from the outlet hole. A water output device (50) is connected by a water output reed (52) to the outlet hole of the casing. A printed control circuit arrangement (30) is provided with rotating switches (34,35) for setting a certain humidity condition, and a control circuit for the control of a timely activation of the motor (14). A humidity sensor arrangement (60) is connected to the casing through electric wires of a waterproof cable (64). The humidity sensor arrangement, formed as an oblong stripe, is put directly into the earth of the potted plants, and comprises a number of electrode contacts which are provided at different places on a front side and on a rear side of the stripe.</p> |
