The small float liquid level switch is a liquid level control component with a simple structure and easy use. It has a complex circuit and will not be interfered with. As long as the material is selected correctly, it can be used for liquids of any nature, pressure and temperature.

In 1936, Walter B. Ellwood of Bell Telephone Laboratories invented the reed switch and applied for a patent in the United States on June 27, 1940, with patent number 2264746.

The reed switch is also called a reed switch or magnetic switch. Here are the steps to make a reed switch.

The water level sensor of the humidifier's automatic water level control device is composed of a reed switch, a float, rollers, and a permanent magnet.

Plastic-encapsulated reed switches consist of a pair of magnetic reeds enclosed in a glass tube filled with an inert gas. The reed ends overlap with a thin gap. The reed contacts are plated with a precious metal, such as rhodium or ruthenium, which provides stable switching characteristics and an extremely long service life.

With the rapid development of smart water meters, it is particularly important to improve the reliability of intelligence.

With the rapid development of smart water meters, it is particularly important to improve the reliability of intelligence.

Reed switch: A circuit breaker controlled by a magnetic field signal. It has no magnetic disconnect function and the glass tube is fragile. It's used to detect when a flip or slide phone is on or off. If the phone's flip is closed, the software disables any functions covered by the flip, such as the keyboard. It can also be configured to answer calls when the flip is opened and hang up when the flip is closed. If the reed switch fails, these functions will cease.

Reed switch sensors work with programmable logic controllers (PLCs) and microcontrollers over a wide operating voltage range and offer high speed operation. When used with a weak magnet, reed sensors can also detect any ferrous metal part.

Switching Current vs. Load Current in a Reed Switch
When selecting a reed switch for a specific application, one of the several issues to consider is how much load current the switch will need to handle. If you are only switching low current signals, this is not a problem as almost any reed switch can handle at least 100mA.