SPECIFICATIONS

ARDUINO Reed Pipe Sensor Module, Magnetic Induction, Large Reed Module KY-025

Purpose:
Program-controlled switches, photocopiers, washing machines, refrigerators, cameras, sterilized cupboards, door magnets, window magnets, electromagnetic relays, electronic weighing instruments, liquid level gauges, gas meters, water meters, etc. have been well used.
Module features:
1, using imported normally open reed pipe
2. Comparator output, clean signal, good waveform, strong driving ability, more than 15mA.
3, working voltage 3.3V-5V
4. Output form: digital switching output (0 and 1)
5. Equipped with fixed bolt holes for easy installation
6, small board PCB size: 3.2cm x 1.4cm
7, using a wide voltage LM393 comparator
Features of reed stem:
The stem reed tube is the abbreviation of the dry reed tube. It is a passive electronic switching component with a touchpoint. It has the advantages of simple structure, small size and easy control. Its shell is generally a sealed glass tube, which is equipped with two iron elastic reed electric plates. It is also filled with an inert gas called metal rhodium. Usually, the two reeds in the glass tube are made of special materials. When a magnetic substance approaches the glass tube, under the action of magnetic field lines, the two reeds in the tube are magnetized and attracted to each other, and the reeds will be attracted together, so that the circuit connected to the junction is connected. After the external magnetic force disappears, the two reeds are separated due to their own elasticity, and the circuit is disconnected. Therefore, as a circuit switching device controlled by magnetic field signals, the reed switch can be used as a sensor for counting, limiting, etc. (mainly used in the production of door magnets and window magnets in security systems), and is also widely used in various communication devices. In practical applications, permanent magnets are usually used to control whether the two metal sheets are connected or not, so it is also called "magnetron".
Module usage instructions:

1. The reed switch needs to be used in conjunction with the magnet. When a certain magnetic force is sensed, it will be in a conductive state. The module outputs a low level. When there is no magnetic force, it will be in a disconnected state and output a high level. The induction distance between the reed switch and the magnet exceeds 1.5cm and is insensitive or there will be no triggering phenomenon.

2. The DO output terminal of the module can be directly connected to the I/O port of the single-chip microcomputer, and the trigger state of the reed switch can be detected through the single-chip microcomputer;

3. The DO output terminal of the module is connected to the IN terminal of the relay to form a high-power reed switch to directly control the high voltage.

Physical Shooting: