Industrial & Scientific From DONGKER on Amazon

Wireless WiFi Transceiver Receiver Module, DC 5V ESP-WROOM-32 Module ESP32 Test Burn Board Batch Burn Fixture

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Features

It is a Downloader for ESP-WROOM-32 ESP-32 WIFI Wireless Module.It has output all GPIO ports for user debugging.

There are many different versions of CH340 driver software on the market, users can choose versions according to their own computer version, download and install by themselves.

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DC 3.3V 1.28'' LCD Display Module,240x240 Resolution Display Equipment for Instrument Display Mobile Devices

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Features

It is a 1.28 inch 240*240 IPS LCD Display Screen.It uses IPS color display screen and the display effect is more vivid than ordinary TFT LCD effect.

4Pin SPI Communication.

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Function Signal Generator, ZK-PP2K Pulse Frequency Generator 8A Driver Module LCD Pulse Frequency Cycle Module 1Hz-150KHz Motor Controller LCD Display

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Features

ZK-PP2K Signal Generator Is A Device that Provides Electrical Signals At A Variety of Frequencies, Square Wave,pulse and Output Levels.It Supports Dual Mode:PWM Mode and PULSE Mode.It Supports High Current Output and Can Be Directly Connected to the Motor.

Use Steps:Connect to Power Supply. Select Work Mode as Following Manual. Short Or Long Press Button ‘FREQ+’ Or ‘FREQ-’ to Set .Short Or Long Press Button ‘DUTY+’ Or ‘DUTY-’ to Set Parameter.Connect to Load.

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Enameled Wire,0.4mm 500g Aluminum Magnet Winding Wire High Temperature Resistant Wire for Transformer Inductor Coil Relay（Random Scroll Color）

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Features

It has high temperature resistance and excellent freezing resistance.

It can be widely used.It can be used for equipment and DIY crafts

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Optical Isolator Module, 1 Channel Optocoupler 12V Photoelectric Optoisolator PNP NPN Signal Converter PC817 Optocoupler Optoisolator

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Features

❤Optocoupler Isolation Board Voltage more than 3000V . Input Current:50MA(MAX). Operating Current:more than 1MA. Output Maximum Current:50MA (when input voltage is within the range of 15－20MA)

❤EL817 photoelectric isolator, SCM output level can be used to isolating,anti-interference and protect SCM some circuit when driving motor

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6J1 Tube Amplifiers Board,Preamplifier Board Kit Preamplifier Volume Control Board Pre-Amp Amplifier

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Features

It is a preamp tube amplifier.Its main function is to improve the sound quality,remove the harsh digital taste in the sound source,and make the music sound quality more soft and sweet.

The amplifier has its unique "bile taste",which can make the sound warm and durable,the music is good,and the atmosphere is good.

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Car MP3 Decoder Board, 12V MP3 Player Digital Audio Decoding Module with Remote Control Support Radio USB TF WMA

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Features

It Is A Car Mp3 Decoder Board.It Supports Bluetooth Function,dual Decoding of MP3,WMA,WAV Format Music,reading USB Disk,card Reading

It Supports Bluetooth Function.It Has A Digital Tube Display. It Supports Music in MP3/WMA/WAV Format.

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51 MCU Development Board, STC89C52 Controller DIY Kit C51 MCU Development Board Experiment Board Compatible AT89C52

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Digital Speed Meter, AC 110V 220V 4Bit Digital LED Tachometer RPM Speed Meter High Precision with Proximity Switch Sensor

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Features

The Proximity Sensor Is Accurate and the Speed Measurement Is Reliable.

High Speed Measurement Range & LED Digital Screen Display.

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795 Motor, DC 12V 24V 11000-24000rpm RPM Mini Electric Motor Ball Bearing Large Torque High Power Motor

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