Flow Switch can detect liquid movem

Flow Switch can detect liquid movement in pipes.
When the liquid is static or nonexistent, the spring
is fully extended pulling the magnet downward and
opening the switch.
As flow occurs and the paddle is thrusted forward
20BC~30 C (or more) the paddle will push the
magnet upward and actuate the switch (closing the
circuit)
The length of paddle can be adjusted to the pipe's
diameter.