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  • Simple rectifier diode
  • Reverse voltage protection
  • Rated for up to 1A/1000V
  • Low voltage high frequency inverters
  • DC/DC converters
  • Guardring for overvoltage protection
  • Very small conduction losses
  • • Extremely fast switching
  • • Low forward voltage drop
  • Control various appliances with large current.
  • Controlled directly with 3.3V or 5V logic signals
  • 2 relays available and LEDS to indicate status
  • Opto isolation circuitry


  • High-quality module with 30A relay
  • SMD optocoupler isolation
  • Stable performance, trigger current 5mA
  • Module voltage: DC 12V.
  • Allowing you to connect a serial printer to a 9 pin serial port, or transfer files from PC via serial connection
  • Length: 1.5m
  • DB9 Pin Extension Cable
  • Durable and practical
  • Miniature switch for projects
  • Rated Load: DC 12V - 0.5A(500mA)
  • Type: Momentary Switch Normally Open
  • Ceramic Disc Capacitor
  • Single layer disc
  • Resin coated
  • LED with PCB 
  • Three primary colors (RGB)
  • PWM program can produce different color changes 
  • Super Bright
  • Diameter: 10mm
  • Resistance change with the change of the strength of incident ray 
  • Coated with epoxy, good reliability
  • High sensitivity and Fast response
  • Good spectrum characteristic
  • Fast Changing Colors
  • Fade-cycle very quickly through several colors
  • Repeat cycle all over again
  • Type 1

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


    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

    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 :

    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


  • Operating Voltage: 3.3V ; Operating frequency : 13.56MHz
  • Maximum Current: 26mA ; No Load Current: 13mA ;
  • Power Down Current: 80uA;
  • Weight : 0.03kg
  • Supports I2C, UART and SPI protocol (max speed :10Mbits/s)
  • Maximum Reading distance : 0~60mm (mifare1 S50 Card)
  • Operating Temperature : -20 - 80C ; Relative Humidity : 5-95%;
  • Supports following card mifare1 S50、mifare1 S70、mifare UltraLight、mifare Pro、mifare Desfire
  • 16 channel analog/digital multiplexer/demultiplexer
  • connect up to 16 sensors or 16 outputs
  • 2V to 12V operation
  • Standard silicon switching signal diode
  • Switching applications up to about 100 MHz 
  • Reverse-recovery time of no more than 4 ns