Self-adhesive membrane numeric keypad – 4 keys
We offer excellent numeric keypad for projects using microcontrollers. Component can be used as a tool to enter data into device.
A display would be a great addition to the microcontroller and numeric keypad, so that the user of the device could easily verify the data entered.
Easy-to-mount keys
The component has 4 membrane keys (appropriately numbered), which can be easily fixed to any smooth surface (keyboard is self-adhesive).
The keyboard was designed to be as easy to connect as possible. That’s why the keyboard is equipped with a strip, where the leads are arranged with a standard spacing – the raster is equal to 2,54 mm (you can easily connect them to the goldpin strip). There are five wires – 4 corresponding to individual buttons and one power supply (5 V).
Features :
- Ultra-thin design & adhesive backing provides easy integration to any project
- Excellent price-performance ratio
- Easy communication with any microcontroller
- This allows a microcontroller to ‘scan’ the 5 output pins to see which of the 4 buttons is being pressed.
Specifications:
| Voltage(V) | DC 12V |
| Operating Current (A) | 100mA |
| Contact Resistance | 500Ω |
| Insulation Resistance (MΩ) | 100 |
| Dielectric Strength | 250VRms |
| Operating Temperature Range (°C) | -40 to 85 |
| Storage condition (℃) | -40 to 80 |
| Mech. & Electrical Lifecycle | ≈ 1,000,000 |
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