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2. Sprinkler system timer - Wikipedia

   en.wikipedia.org/wiki/Sprinkler_system_timer

   A sprinkler system timer is an electrical device that is used to set an irrigation sprinkler system to come on automatically at a certain time. Irrigation timers first appeared in the early 1960s to control large-radius lawn sprinklers, which at the time usually contained their own electrically operated valve (most golf-course sprinklers still use this type of actuation).

3. Water timer - Wikipedia

   en.wikipedia.org/wiki/Water_timer

   The solenoid/diaphragm timer uses more battery power throughout the "on" cycle because the solenoid must be actuated the entire time that the water flow is "on". The ball valve timer using the motor and gear actuator only uses more battery power during the few seconds that motor is used to turn the water flow on or off.

4. Orbit Irrigation Products - Wikipedia

   en.wikipedia.org/wiki/Orbit_Irrigation_Products

   Orbit logo. Orbit Irrigation Products, Inc, located in Salt Lake City, UT, United States, is a manufacturer and supplier of irrigation products for residential and commercial markets and has been in business since 1986. It distributes over 2,000 products to 40 countries on five continents. Orbit was acquired by Husqvarna Group in December 2021 ...

5. Water-activated battery - Wikipedia

   en.wikipedia.org/wiki/Water-activated_battery

   Side-view of water-activated radiosonde battery Radiosonde battery still in protective wrapper Typically, a large variety of aqueous solutions can be used in place of plain water. This battery type is specifically designed to pollute less (see environmentally friendly claims) due to the lesser use or the absence of heavy metals .

6. Frozen orbit - Wikipedia

   en.wikipedia.org/wiki/Frozen_orbit

   As a result, the spacecraft will pass over points on the Earth that have the same time of day during every orbit. For instance, if the orbit is "square to the Sun", the vehicle will always pass over points at which it is 6 a.m. on the north-bound portion, and 6 p.m. on the south-bound portion (or vice versa). This is called a "Dawn-Dusk" orbit.