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12mm Reed Switch/Sensor

12mm Reed Switch/Sensor

Regular price Rs. 24
Regular price Rs. 34 Sale price Rs. 24
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  • The Reed Switch separates, and the switch opens.
  • Very easy to use.
  • Direct connection in the circuit.
  • This switch can carry up to 1.2A

12mm Reed Switch/Sensor

The 12mm reed switch/sensor is an electrical switch operated by an applied magnetic field. The reed switch contains a pair (or more) of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open. The reeds are hermetically sealed in opposite ends of a tubular glass envelope.

When the device is exposed to a magnetic field, the two ferrous pins inside the switch pull together and the switch closes. When the magnetic field is removed, The Reed Switch separates and the switch opens. This makes for a great non-contact switch. This switch can carry up to 1.2A.


  • Home and office automation.
  • Door or windows sensor as a burglar alarm.

Package Includes:

  • 1 x 12mm Reed Switch


Maximum Voltage(V) 24V DC
Maximum Operating Current (A) 1.2
Frequency(Hz) 100
Mech. & Electrical Lifecycle ≈ 100,000
Contact Resistance 20mΩ
Insulation Resistance (MΩ) 100
Operating Temperature Range (°C) -50 to 140 °C
Dimensions 12x2x1mm
Weight 1

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

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1.What is a 12mm Reed Switch/Sensor used for?

  • A 12mm Reed Switch/Sensor is a type of switch that uses a magnetic field to close or open an electrical circuit. It's commonly used in security systems, home automation, and other applications where the presence or absence of a magnetic field needs to be detected.

How does a 12mm Reed Switch/Sensor work?

  • A Reed Switch/Sensor is composed of a sealed glass tube containing two or more ferromagnetic metal reeds. When a magnetic field is brought near the reed switch, the reeds align themselves with the field and the switch closes, completing an electrical circuit. When the magnetic field is removed, the reeds return to their original position and the switch opens, breaking the circuit.

What is the main advantage of using a 12mm Reed Switch/Sensor over other types of switches?

  • The main advantage of using a Reed Switch/Sensor over other types of switches is that it can be operated remotely by a magnetic field, without any physical contact. This makes it useful for applications where it's not possible or desirable to have physical contact with the switch, such as in harsh environments or in places where contamination or wear is a concern. Additionally, reed switches are known for their high reliability and long lifespan.