This pack has 10 normally open reed switches, a basic kind of magnetic sensor. Each switch has two contacts inside a sealed glass tube. These contacts close to complete a circuit when a magnet gets close. Their small 2x14mm size means they work well for many electronics projects.
Features and Benefits
- Normally Open (NO) contacts - The circuit stays off until a magnet activates it. This saves power, which is good for battery-run devices.
- Sealed glass body - This keeps dust, rust, and moisture away from the internal contacts. It helps the switch work reliably over time.
- Small 2x14mm size - These small reed switches fit into tight or hidden spots inside your project's case.
- Rated for 10W at 100VDC - This small glass reed switch works well for low-voltage DC uses, like security systems, toys, and IoT projects.
Applications
- Make your own magnetic reed switch for a door or window alarm. It will signal when someone opens an entry point.
- Use it as a non-touch position sensor in robots. It can tell when a moving part has reached its spot.
- Create custom inputs for hobby electronics. A magnet nearby can trigger a light, sound, or other action.
What It Is
This product is a pack of ten normally open (N/O) reed switches, each measuring 2 x 14 mm. Manufactured from glass, these components function as magnetic sensors based on the principle of magnetic induction. They are designed for use as proximity sensors in various DIY electronics modules. When a magnetic field is present, the switch closes, completing an electrical circuit. This simple yet effective design makes them suitable for detecting the presence or absence of a magnetic source without physical contact.
Key Uses & Applications
These 2x14mm normally open reed switches are primarily used in applications requiring magnetic sensing. As a type of proximity sensor, they are ideal for detecting movement, position, or the presence of objects in DIY projects. Common applications include security systems, door and window alarms, limit switches, and simple automation tasks. They can be integrated into various electronics modules where a compact, reliable magnetic switch is needed. Their small dimensions make them versatile for discreet installations.
How to Choose
When selecting a reed switch, consider the required dimensions and switch type. This product offers 2x14mm normally open (N/O) switches, suitable for applications where the circuit needs to be closed when a magnetic field is detected. For testing a proximity sensor like this, a simple multimeter can be used to check for continuity across the leads when a magnet is brought near. Ensure the switch type (N/O or normally closed) aligns with your circuit's intended behaviour. Consider the operating distance, though not specified for this product, as it can vary with magnet strength.
Dimensions: 2 x 14 mm. Material: Glass. Application: Magnetic Sensor. Switch Type: Normally Open (N/O) Reed Switch. Theory: Magnetic Induction. Dimensions: 2 mm (diameter) x 14 mm (length). Material: Metal. Maximum Switching Voltage: 200 VDC. Operating Temperature Range: -20°C to +80°C. Maximum Contact Rating: 10 W. Operating Mode: Normally Open (N/O). Contact Form: SPST (Single Pole Single Throw). Insulation Resistance: 10^9 Ohms (minimum). Maximum Switching Current: 0.5 A. Product Type: Reed Switch. Quantity: 10 pieces. Switch Type: Magnetic Induction Switch. Theory: Hall Sensor. Q: What are the electrical ratings for these switches? A: These are Normally Open (N/O) switches, which means the circuit is open until a magnet is present. They have a maximum switching voltage of 100V DC and can handle up to 0.5A of current.. Q: How do I handle these without breaking the glass? A: The switch is housed in a small glass tube, so it needs some care during installation. It's best to avoid bending the leads right at the glass seal. Once it's soldered onto a board or secured in a housing, it's quite stable.. Q: How does this component work as a magnetic sensor? A: Inside the glass tube are two metal reeds that don't touch. When you bring a magnet close, its magnetic field pulls the reeds together, which closes the circuit. This simple on/off action lets you detect the presence of a magnet.. Q: What if I get a defective switch in my pack of 10? A: We do our best to check everything, but if you find a switch that doesn't work when it arrives, just contact us. We'll be happy to arrange a refund or a replacement for the faulty unit.. Q: Does this package include the magnets to activate the switches? A: This package contains only the 10 reed switches. You will need to get your own magnets, such as small neodymium or ceramic types, to operate them..