1x4 Membrane Keypad – Compact 4-Button Panel for Your Arduino Projects

This 1x4 membrane switch (keypad) is a thin, flexible, and reliable interface for adding four buttons to your Arduino or other microcontroller project. It uses a matrix design that connects the four keys with a total of only 6 conductors (pins) - one for each of the four rows and four columns (in a 1x4 configuration, this is typically 2 rows and 2 columns), which saves valuable GPIO pins. Made of durable, moisture and dust-resistant materials, with an adhesive strip for easy mounting and an exceptional lifespan of over 500,000 presses, this switch is ideal for applications where space and reliability are crucial. It is perfect for control panels on household appliances, medical instruments, industrial equipment, or any project requiring a compact and efficient user interface.

Standard square resistance: ≤ 50mq / port / mil

Contact resistance: 10 - 500q (varies with lead length and material)

Insulation impedance: 100mq 100V

Dielectric withstand voltage: 250vrms (50-60hz1min)

Contact jitter time: ≤ 5ms

mechanical properties

Operating pressure: metal shrapnel type 220-350g

Environmental parameters

Switch stroke: metal spring, sheet type 0.6-0.8mm

Storage temperature: + 15 ° C-35 ° C

Storage humidity: 70% - 90%

Test temperature: - 0 ° C- +60 ° C 16H

Test humidity: 70% - 90%

Vibration: 20g's MSX. (10-200hz, mil-std-202, M204, condition B)

Material properties

Line thickness: ≤ 0.13MM

Service life: film button type less than 500000 times