KY-021 Small/Miniature Magnetic Reed switch

The KY-021 Mini Magnetic Reed Switch Module is a small, easy-to-use module that can use to detect the presence of a magnetic field. KY-021 consists of a reed switch, a 10kΩ resistor, and a 3-pin header. The reed switch KY-021 is a small, sealed capsule that contains two pieces of metal that are held apart by a small magnet. When the magnet is brought close to the reed switch, the magnetic field pulls the two pieces of metal together, completing the circuit and sending a signal to the microcontroller.

Magnetic Reed Switch Module KY-021 Small/Miniature Commonly used in mechanical systems as proximity sensors. Magnetic Reed Switch Module is a SPST switch with NO (Normally Open) contacts until a magnet comes into close.

The KY-021 Mini Magnetic Reed Switch Module is compatible with most microcontrollers, including Arduino, Raspberry Pi, and ESP8266. It can use in a variety of applications, such as door sensors, proximity sensors, and security systems.

The input voltage of the KY-021 Mini Magnetic Reed Switch Module is typically between 3.5v and 5.5v DC. The KY-021 Mini Magnetic Reed Switch Module is designed to work with a voltage range of 3.3V to 5V. If you connect it to a voltage that is outside of this range, it may not work properly or it may damage.

There is a 3-pin header on the assembly. The ‘-‘ pin is connected to the ground end of the switch and the ‘S‘ output pin is connected to the other side of the switch.

Mini Magnetic Reed Switch Module is a versatile and easy-to-use module that can use in a variety of applications. If you are looking for a way to detect the presence of a magnetic field, then the KY-021 Mini Magnetic Reed Switch Module is a good option to consider.

Features : –

Reed switches are mechanical switches which activates by a magnet when the magnetic field pulls the metallic switch contacts together. KY-021 Small/Miniature Magnetic Reed Switch Module is a SPST switch with NO (Normally Open) contacts until a magnet comes into close proximity to the glass envelope and then the switch contacts are closed. The output is HIGH when the switch is open and is grounded (LOW) when the contacts are closed.

The KY-021 Mini Magnetic Reed Switch Module has a number of benefits, including:

• Simple to use
• Inexpensive
• Small and lightweight
• Versatile
• Durable

KY-021 Mini Magnetic Reed Switch Module Specifications : –

The KY-021 Mini Magnetic Reed Switch Module is compatible with most microcontrollers, including Arduino, Raspberry Pi, and ESP8266. It can use in a variety of applications, such as door sensors, proximity sensors, and security systems.

Here are the specifications of the KY-021 Mini Magnetic Reed Switch Module:

• Operating voltage: 3.3V to 5V
• Output type: Digital
• Dimensions: 20 x 15 x 7mm
• Input voltage: 3.3~5v
• Weight: 1.2g
• Reed switch: Normally open
• Reed switch sensitivity: 30 gauss
• Operating temperature: -20°C to 85°C
• Storage temperature: -40°C to 125°C

KY-021 Mini Magnetic Reed Switch Module Pin Descriptions : –

The KY-021 Mini Magnetic Reed Switch Module works on the principle of a reed switch.

The KY-021 Mini Magnetic Reed Switch Module has three pins:

• VCC: This pin connect to the positive voltage supply.
• GND: This pin connect to the negative voltage supply.
• OUT: This pin outputs a digital signal that is HIGH when the reed switch close and LOW when the reed switch open.

Applications : –

The KY-021 Mini Magnetic Reed Switch Module is a versatile and easy-to-use module that can use in a variety of applications. If you are looking for a way to detect the presence of a magnetic field, then the KY-021 Mini Magnetic Reed Switch Module is a good option to consider.

Here are some of the applications of the KY-021 Mini Magnetic Reed Switch Module:

• Door sensors
• Proximity sensors
• Security systems

Package : –

1 x KY-021 Mini Magnetic Reed Switch Module

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