12/16 Number Button Matrix Keypad Key Membrane Switch Button Arduino Raspberry Pi Numpad Keyboard Module Techmakers

Type 1

COM-08653 Matrix Keyboard Keypad Module keypad-12 button Plastic Keys Switch for Arduino Controller

Features:

100% brand new and high quality.
12 Button Matrix 0-9 # *
Excellent price-performance ratio
Easy communication with any microcontroller
Package includes: COM-08653 Matrix Keyboard Keypad Module keypad-12 button Plastic Keys Switch for Arduino Controller

Type 2

4x4 Matrix Membrane Keypad

Specification:
4 x 4 Matrix Keyboard
16 Buttons
Size: 39 x 43mm

Ever wanted to design a safety device/application with secret keycode. You can design any application using this numeric matrix keypad membrane arranged with 12 buttons in a telephone-line 3x4 grid, with an extra A,B,C,D characters. FEATURES

Thin, flexible membrane material with adhesive backing.
Keys are connected into a matrix
Only need 8 I/O pins(4 columns* 4 rows) to scan through the pad.
8 pins DuPont head, pitch 2.54mm.Example : http://www.electrodragon.com/w/Membrane_Switch_Keypad

Type 3

4x4 Matrix Keypad Keyboard Module

Breakout-Module for 4x4 matrix keypad can be easily interfaces with any microcontroller of your choice.

This product has variety of applications. You may use it to test your menu driven projects, as dialer pad, as part of your control panel project or as alpha numeric key pad.

This module has no isolation between on the solder side (bottom side). Avoid contact of solder side and your body while using it. This will reduce the ESD risk.
Keypad Keyboard module 16 Button

Type 4

3x4 Matrix Keyboard

- Pad Size: 69.2 x 76.9 x 0.8mm
- Cable Length: 3-1/3″ or 86mm (include connector)
- Connector: Dupont 7 pins, 0.1″ (2.54mm) Pitch
- Mount Style: Self-Adherence
- Max. Circuit Rating: 35VDC, 100mA
- Insulation Spec.: 100M Ohm, 100V
- Dielectric Withstand: 250VRms (60Hz, 1min)
- Contact Bounce: <=5ms
- Life Expectancy: 1 million closures
- Operation Temperature: -20 to +40 °C

TYPE 5

SIze:6.5 x 6.4 CM
Weight:13.3g
-This is 4×4 Matrix 16 Keyboard Keypad Telephone Style Black. It is 16 Button Keypad switch, ideal for code or data entry. Each key is rated for up to 1,000,000 life-stroke and also features a durable high-quality material contact surface for best environmental resistances.
-This 4×4 Keypad Matrix lets you quickly add controls to your electronics projects. It offers 0-9 numerals, A-D letters, and standard star(*) and hash(#) symbols