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The liquid level switch detects the rising level of liquid in a sump or tank. It can be connected to a micro controller. It can then be used to start/stop a pump which then pumps liquid in/out until the level of the liquid has been restored to the point where the pump is switched off again. The switch may be used in a pump station, a sensor, a tank alarm, or other devices.
Specification:
Contact Rating: 10W
Switching Voltage: 220V
Switching Current: 0.5A
Breakdown Voltage: 220VDC
Carry Current: 1.0A
Contact Resistance: 100mohm
Resources:
Python library
Introduction to Buttons and Switches
Types of buttons and switches