1 Key 1×1 Matrix Membrane Switch Keypad – Yellow
₹48.00 excl GST
The 1 Key 1×1 Matrix Membrane Switch Keypad – Yellow is a compact, flexible, and self-adhesive momentary push-button switch suitable for Arduino, Raspberry Pi, ESP32, embedded systems, and DIY electronics. Its normally open 2-pin interface makes it ideal for reset, start, stop, trigger, and menu-selection applications.
The 1 Key 1×1 Matrix Membrane Switch Keypad – Yellow is a compact, lightweight, and durable input switch designed for microcontroller, embedded electronics, automation, and DIY projects. It features a single yellow membrane button that can be used for simple control functions such as start, stop, reset, trigger, mode selection, or menu navigation.
The keypad operates as a normally open momentary switch. When the button is pressed, the internal contacts close the circuit and generate an input signal. Once released, the switch automatically returns to its normally open state.
Its slim and flexible construction makes it suitable for mounting on control panels, project enclosures, machines, and electronic prototypes. The self-adhesive backing allows quick installation without requiring additional screws or brackets. A simple 2-pin interface makes the keypad easy to connect to Arduino, Raspberry Pi, ESP32, ESP8266, and other development boards.
Features
- Single-key 1×1 membrane keypad
- Yellow circular push button
- Momentary normally open switch
- Slim, lightweight, and flexible construction
- Self-adhesive backing for easy mounting
- Simple 2-pin electrical interface
- Suitable for low-voltage digital circuits
- Easy to interface with microcontrollers
- Ideal for start, stop, reset, and trigger functions
- Suitable for educational and industrial projects
Specifications
| Parameter | Specification |
|---|---|
| Key Configuration | 1×1 Matrix |
| Number of Keys | 1 |
| Switch Type | Momentary |
| Contact Type | Normally Open (NO) |
| Output Interface | 2-Pin Connector |
| Connector Pitch | 2.54 mm |
| Button Colour | Yellow |
| Pad Size | 23 × 20 mm |
| Overall Length | Approximately 115 mm |
| Thickness | Approximately 1 mm |
| Weight | Approximately 3 g |
| Mounting Type | Self-Adhesive Backing |
| Operating Voltage | Suitable for Low-Voltage Digital Circuits |
| Operating Temperature | -40°C to 85°C |
Working Principle
The two output pins remain electrically open when the button is not pressed. Pressing the yellow membrane key closes the internal contacts, allowing current to pass through the switch. When the button is released, the contacts open again.
The keypad can be connected between a microcontroller input pin and ground. The internal pull-up resistor of the microcontroller may be enabled to obtain a stable digital input.
Applications
- Arduino projects
- Raspberry Pi projects
- ESP32 and ESP8266 projects
- DIY electronic circuits
- Home automation systems
- Industrial control panels
- Reset and trigger switches
- Start and stop controls
- Menu selection buttons
- Robotics projects
- Embedded system interfaces
- Educational electronics projects
- Prototype development
- Custom control enclosures
Package Includes
- 1 × 1 Key 1×1 Matrix Membrane Switch Keypad – Yellow
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The colour, dimensions, connector design, printing, or appearance of the actual product may vary slightly depending on the manufacturing batch.
Frequently Asked Questions
1. Is this keypad a momentary switch?
Yes. The contacts remain closed only while the yellow button is being pressed. They open automatically when the button is released.
2. Is the switch normally open?
Yes. It is a normally open, or NO, membrane switch.
3. How many connection pins does it have?
The keypad has a simple 2-pin connection.
4. Can it be connected to Arduino?
Yes. It can be connected to any Arduino digital input pin and used like a standard push button.
5. Can I use it with an ESP32 or Raspberry Pi?
Yes. It is suitable for ESP32, ESP8266, Raspberry Pi, STM32, Arduino, and other low-voltage digital systems.
6. Does it require a separate power supply?
No. It is a passive switch and does not require a separate power supply.
7. Does it have adhesive backing?
Yes. The keypad has a self-adhesive backing for mounting on a clean and flat surface.
8. Can it be used as a reset button?
Yes. It can be used as a reset, start, stop, trigger, mode selection, or menu control button.
9. Is the button illuminated?
No. The yellow button is not internally illuminated.
10. Can it directly control a motor or high-current load?
No. It should be connected to a microcontroller input or a suitable driver circuit. It should not be used to directly switch motors or other high-current loads.Only logged in customers who have purchased this product may leave a review.
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