This item is a magnetic sensor, also called a magnetic reed switch. It's a normally open (NO) switch. This means the circuit stays open until a magnet comes close. Its small, round shape helps it fit in tight spots. Features and Benefits
- Normally Open Operation - The contacts inside are separate. This creates an open circuit that only closes when a magnetic field is there.
- Multiple Body Sizes - It comes in lengths from 10mm to 38mm. You can pick the right size for your enclosure or mounting needs.
- Hermetically Sealed Contacts - The switch is sealed in a glass tube. This protects it from dust, rust, and moisture so it works consistently.
- Passive Component - This magnetic sensor doesn't need power to run. This helps simplify your circuit and make batteries last longer. Applications
- Security System Sensors - It's a common choice for making door and window sensors for home security systems.
- Equipment Safety Interlocks - It confirms that a safety guard or access panel is closed. This prevents a machine from running until it's safe.
- Liquid Level Detection - Attach it to a float in a tank. It creates a simple switch that triggers when the liquid reaches a set level.
What It Is
This Sensor Switch is a magnetic reed proximity sensor, designed for detecting the presence or absence of an object without physical contact. It operates as either Normally Open (NO) or Normally Closed (NC), offering flexibility for various control circuits. The sensor is available in several dimensions, ranging from 10mm to 38mm, and comes in a pack of five. It handles a maximum switching voltage of 200V and a maximum switching current of 0.5A, with a contact rating of 10W.
Key Uses & Applications
This magnetic reed proximity sensor is suitable for a range of industrial and electronic applications where reliable object detection is needed. Common uses include position sensing, level detection, and security systems. For example, it can be used to detect if a door is open or closed, or to monitor the position of moving parts in machinery. Proximity sensors work by sensing changes in a magnetic field, triggering a switch when an object (often containing a magnet) comes within range.
How to Choose
When selecting this Sensor Switch, consider the required physical dimension, with options from 10mm to 38mm. The switching action (NO/NC) should match your circuit's requirements. Ensure the application's voltage (up to 200V) and current (up to 0.5A) do not exceed the sensor's maximum ratings. To test a proximity sensor, simply bring a suitable magnetic object close to it and observe if the circuit switches as expected. For optimal performance, ensure the sensor is installed within its specified sensing range.
Dimensions: 10mm, 15mm, 18mm, 20mm, 25mm, 30mm, 38mm. Switching Voltage: 200V (max). Contact Rating: 10W (max). Number of Pieces: 5. Sensor Type: Magnetic Reed Switch. Switching Action: Normally Open/Closed (NO/NC). Switching Current: 0.5A (max). Available Lengths: 10mm, 15mm, 18mm, 20mm, 25mm, 30mm, 38mm. Contact Material: Ruthenium or Rhodium (typical for reed switches). Max Switching Voltage: Typically 200V DC / 140V AC. Operating Temperature: -40°C to +125°C. Contact Resistance: Typically < 150mΩ. Insulation Resistance: > 10^9 Ω. Life Expectancy: Millions of operations. Max Carry Current: Typically 1.0A. Max Switching Current: Typically 0.5A. Product Name: GPS-01 Magnetic Reed Switch. Quantity: 5 pieces. Sensor Type: Magnetron Proximity Sensor. Switching Action: Normally Open (NO) / Normally Closed (NC). Q: What do 'Normally Open' and 'Normally Closed' mean for these switches? A: A 'Normally Open' (NO) switch creates a connection and completes the circuit when a magnet is nearby. A 'Normally Closed' (NC) switch has a connection that breaks when a magnet is brought close to it.. Q: What are the electrical ratings for this magnetic sensor? A: These switches are intended for low-power signaling applications. They can handle a maximum of 10W, with a switching voltage up to 100V DC and a switching current up to 0.5A.. Q: I need a specific size. Are the switches in the 5-pack all the same? A: Yes, each 5-pack contains five identical switches of the size and type you select. You can choose from many lengths, including 10mm, 18mm, 25mm, and up to 38mm.. Q: What is the typical activation distance for these? A: The activation distance is generally about 10mm, but this can change depending on the strength of the magnet you are using. They are designed for applications where the magnet will pass very close to the switch.. Q: What if these switches don't fit my project? Can I return them? A: If the switches are unused and in their original condition, you can return them according to our standard store policy. We suggest double-checking the dimensions and electrical ratings before you order to ensure they're right for your needs..