Key Switch Modules
📦 Location of the warehouse: München
🚚 We will ship your order within 24 hours after the order is taken.
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Key Switch Modules
A push button switch, also known as a tactile switch, operates by applying pressure in the direction of the switch to meet the actuation force requirement, causing the switch to close and connect. When the pressure is removed, the switch opens. The internal mechanism relies on the force changes of a metal dome to achieve the open and closed states. As shown in the diagram, under normal conditions, pins 1 and 2, and pins 3 and 4 of the button are connected; when the button is pressed, all four pins are connected; when the button is released, it returns to its normal state. When the module is properly connected, the red power LED lights up. When the button is pressed, the module outputs a low level and the signal blue LED lights up. When the button is released, the blue LED turns off and the output is high.
Schematic Diagram
Module Parameters
Pin Definitions
| Pin Name | Description |
|---|---|
| G | GND (Power input ground) |
| V | VCC (Power input positive) |
| S | Signal (Digital signal output pin) |
Additional Specifications
- Supply Voltage: 3.3V / 5V
- Connection Method: 2.54mm pitch header
- Mounting Method: Dual screw fixing
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
