Reed Switch Module
Reed Switch Module - A Reed Switch is a passive electronic switching component that consists of two metals in a vacuum-sealed glass tube. When near a magnetic field, the two metal components attract each other and the reed switch activates. This Reed Switch Module sends a HIGH signal when its reed switch is triggered by a magnetic material. This functionality is popular in modern devices like the mechanism that puts your laptop to sleep when the lid is closed.
Important factors to bear in mind to understand the working of the reed switch
- Any switch in an electric circuit functions much like a mobile bridge, with the current flow representing the flow of traffic across the bridge. When the switch is open, no current passes through; when it is closed, current does. In this regard, reed switches are similar.
- The reed switch is stuck in whatever default position it naturally takes when there is no magnet present, and it cannot be forced to actuate in any other manner. In other words, in the absence of an external magnetic field, it is essentially a redundant device.
- Several variables affect the kind and size of the magnet required to move the contact blades. These factors include the reed switch's construction, size, and sensitivity as well as how near the switch housing you can place the external magnetic field.
- Reed switches have several advantages, including the ability to be integrated and concealed within electronics because they do not require physical manipulation. When selecting a suitable powerful magnet, this will need to be taken into consideration because it frequently means that magnetic forces must travel a greater distance to actuate the reeds.
- Neodymium is one type of magnet used because it is very strong, while other magnet types produce a smaller magnetic field overall but have deeper penetration (e.g. ferrite). This may also have an impact on the components you choose, depending on the switch location.
- Reed switches' sensitivity is normally measured in ampere-turns, or AT, and for the majority of common applications, is typically in the range of 10 to 60. Lower numbers signify an easier-to-activate (more sensitive) switch.
- Position, distance, magnet orientation concerning the switch, and the polarity of the magnet can all have an impact on the general sensitivity of reed switches. Finding the ideal configuration of both components for the most accurate results frequently requires some experimenting.
- Testing for many actuations while a magnet passes by is essential as well. This is typical, especially with more sensitive switches where the reeds' sensitivity to a magnetic field fluctuates continually in response to minute changes in their relative positions. Imprecise magnet movement that causes a switch to cycle on and off frequently would be problematic for many applications. Good examples include sensors connected to door-opening motors or alarm systems.
- Open reed switch
- Working voltage: 3.3V~5V
- Comparator output, clean signal, great waveform, and strong driving ability
- digit switch output (0 and 1)
- Fixed bolt hole for easy installation
Inclusions: 1 x Reed Switch Module