Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the GODIYMODULES 2.5x14mm 3-Pin Reed Switch. This component is designed for various applications requiring magnetic sensing, offering both Normally Open (NO) and Normally Closed (NC) contact configurations. Please read this manual thoroughly before use to ensure proper functionality and safety.
Safety Information
Always observe the following safety precautions:
- Ensure power is disconnected before installation or maintenance.
- Do not exceed the maximum voltage and current ratings specified in this manual.
- Handle the glass body of the reed switch with care as it is fragile.
- Avoid excessive heat during soldering, as this can damage the internal components. Use heat sinks if necessary.
- Keep the product away from strong electromagnetic fields unless intentionally used for sensing them.
Product Overview
The GODIYMODULES 2.5x14mm Reed Switch is a magnetically operated electrical switch. It consists of two or three ferromagnetic reeds enclosed in a hermetically sealed glass tube. When a magnetic field is brought near the switch, the reeds become magnetized and attract each other, completing a circuit. This 3-pin version offers both Normally Open (NO) and Normally Closed (NC) contacts.
Image: A single GODIYMODULES 2.5x14mm 3-Pin Reed Switch, showing its glass body and three metal pins.
Image: Side profile of the reed switch, highlighting its compact cylindrical design.
Specifications
| Parameter | Value |
|---|---|
| Maximum Power | 4 W |
| Maximum Switching Voltage | 60V DC / VAC |
| High Voltage | 60V DC / VAC |
| Maximum Switching Current | 0.25A |
| Maximum Load Current | 0.5A |
| Maximum Contact Resistance | 115 mΩ |
| Minimum Insulation Resistance | 2x107 / 2x109 Ω |
| Action Time | 0.25 ms |
| Impact Time | 0.05 ms |
| Response Frequency | 3000 Hz |
| Sensitive Value (AT) | 10 ~ 20 AT |
| Minimum Reset Value | 5 ft |
| Maximum Contact Capacity | 2.0 pF |
| Operating Temperature | Up to 85°C |
| Material | Alloy Steel (contacts) |
| International Protection Rating | IP54 |
Setup and Wiring
The 3-pin reed switch provides both Normally Open (NO) and Normally Closed (NC) contacts, along with a common pin. Understanding the pinout is crucial for correct operation.
Pin Identification:
- Common Pin: This is the central pin. All connections are made relative to this pin.
- Normally Open (NO) Pin: This contact is open (no continuity) when no magnetic field is present. It closes (continuity) when a magnetic field is applied.
- Normally Closed (NC) Pin: This contact is closed (continuity) when no magnetic field is present. It opens (no continuity) when a magnetic field is applied.
Installation Steps:
- Mounting: Secure the reed switch in the desired location. Ensure it is positioned where it can interact effectively with the magnet.
- Wiring:
- For NO operation: Connect your circuit between the Common pin and the NO pin.
- For NC operation: Connect your circuit between the Common pin and the NC pin.
- Ensure all connections are secure and properly insulated.
- Soldering Precautions: When soldering, apply heat quickly and use a heat sink on the leads to protect the glass body from thermal shock. Avoid prolonged contact with the soldering iron.
- Testing: After installation, test the switch's functionality by bringing a magnet near it and observing the circuit's response.
Image: An angled view of the reed switch, illustrating the three distinct pins for connection.
Operating Instructions
The reed switch operates based on the presence or absence of a magnetic field. Its behavior depends on whether you are using the Normally Open (NO) or Normally Closed (NC) configuration.
- Normally Open (NO) Operation:
When no magnet is near the switch, the NO contacts are open, and no current flows. When a magnet is brought within the sensitive range (10-20 AT), the contacts close, allowing current to flow through the circuit.
- Normally Closed (NC) Operation:
When no magnet is near the switch, the NC contacts are closed, allowing current to flow. When a magnet is brought within the sensitive range, the contacts open, interrupting the current flow.
The optimal distance for activation will vary depending on the strength of the magnet used. Experiment with different distances to find the most reliable activation point for your application.
Maintenance
Reed switches are generally low-maintenance components due to their sealed design. However, proper handling and environmental conditions are important for longevity.
- Cleaning: If necessary, gently wipe the exterior of the glass tube with a dry, soft cloth. Avoid using harsh chemicals or abrasive materials.
- Environmental Conditions: Store and operate the switches within the specified temperature range (up to 85°C). Protect them from excessive moisture, dust, and corrosive environments.
- Physical Protection: While the glass tube is sealed, it is still fragile. Avoid dropping or subjecting the switch to strong mechanical shocks. Consider enclosing the switch in a protective housing for applications where physical impact is possible.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Switch does not activate/deactivate |
|
|
| Intermittent operation |
|
|
| Switch appears physically damaged (cracked glass, bent pins) |
|
|
What's in the Box
Each package contains the following items:
- 10 x GODIYMODULES 2.5x14mm 3-Pin Reed Switches
Image: A view of ten reed switches neatly arranged, as typically found in the product package.
Warranty and Support
GODIYMODULES products are manufactured to high-quality standards. For any technical support or warranty inquiries, please contact your retailer or the manufacturer directly. Please refer to your purchase documentation for specific warranty terms and conditions.