Best Optoelectronic Products Deals of Oct 2026
Updated October 29, 2026Our site contains affiliate links for which we may be compensated.
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4.0-inch color screen,support 65K color display,display rich colors, 480X320 resolution, with touch function.
Using the SPI serial bus, it only takes a few IOs to illuminate the display.
Eeasy to expand the experiment with SD card slot and touch pen.
Compatible with Arduino R3/Nano/Mega controller boards, which will improve your project operation.
NOYITO 1-Channel PC817 Optocoupler Isolation module adopts 5.0 pitch screw terminals for easy wiring . The module can play the role of isolation when the output level of the single-chip microcomputer drives the inductive devices such as motors and motors, and protect part of the circuit of the single-chip microcomputer against interference
The module can be used for high-voltage detection. For example, if the output signal level of a sensor is 12V, and the voltage of the microcontroller is 5V, this module can be used for isolation detection.
The module can also be used for current amplification. For example, when the output current of the microcontroller is too small to drive certain circuits, this module can be used for amplification.
Input signal voltage: 3-5V / 12V / 24V (optional).
PC817 4 channel optocoupler isolation board is independent, can control different voltage at then same time.
4-way 817 optocoupler driving port signal voltage:3.6-24V; Output voltage range: 3.6-30V(The output current depends on the specific situation but not over 10MA. When the total power is fixed, the voltage and current are inversely proportional).
4 way 817 optocoupler to achieve the control signal and the control signal isolation, you can directly use the microcontroller or other devices IO port to achieve voltage isolation control, you can achieve a small voltage control, the control side can be an external transistor MOS tube or different voltage levels Of the device interface.
PC817 module jumper cap can be used to determine whether the output terminal is high potential output or low output.
NOYITO 1-Channel PC817 Optocoupler Isolation module adopts 5.0 pitch screw terminals for easy wiring . The module can play the role of isolation when the output level of the single-chip microcomputer drives the inductive devices such as motors and motors, and protect part of the circuit of the single-chip microcomputer against interference.
The module can be used for high-voltage detection. For example, if the output signal level of a sensor is 12V, and the voltage of the microcontroller is 5V, this module can be used for isolation detection.
The module can also be used for current amplification. For example, when the output current of the microcontroller is too small to drive certain circuits, this module can be used for amplification.
Input signal voltage: 3-5V / 12V / 24V (optional).
【Powerful ESP32-32E Core】 Powered by the ESP32-D0WD-V3 dual-core 32-bit LX6 processor with a maximum clock speed of 240MHz, this module delivers high performance and stable connectivity with built-in WiFi (2.4GHz, 802.11b/g/n) and Bluetooth 4.2 (BR/EDR + LE). Ideal for IoT, smart devices, and embedded projects.
【Vibrant 4.0-Inch Color Display】 Features a crisp 320x480 resolution screen supporting 262K colors (RGB666), offering clear, vivid visuals for all your display needs. Includes a resistive touch screen for intuitive human-computer interaction.
【Rich Expansion Interfaces】 Equipped with abundant interfaces including I2C, SPI, UART, and more—making it easy to connect sensors, actuators, and other peripherals. Also includes a Type-C port for fast programming and reliable power delivery.
【Multimedia & Storage Ready】 Supports external speaker output for audio playback and includes an RGB indicator light for status feedback. A built-in TF card slot allows for storage expansion—perfect for logging data or storing media files.
Dual-Size Versatility: Each color (White/Red/Blue/Green/Yellow) includes 20pcs 5mm LEDs and 40pcs 3mm LEDs, totaling 300pcs. Perfect for projects requiring flexibility in size and brightness.
Precise Technical Specs: Forward Voltage: Red/Yellow 2.0-2.2V; Blue/Green/White 3.0-3.2V.
Wide Application: Ideal for DIY electronics, Arduino/Raspberry Pi projects, PCB circuits, car decorations, science experiments and holiday lights.
Organized Storage: Color-coded and size-separated in a labeled plastic case for easy access and protection against damage.
GuuYebe PC817 Optocoupler kit : PC817C PC817 Optocoupler, Optocouplers of Optoelectronic Products
Model No: PC817 Optocoupler PC817C
GuuYebe PC817 Optocoupler / PC817C Spec: Photocoupler output type is phototransistor , Number of pins is 4, Needle distance is 2.54mm , Package quantity is 50 pieces.
GuuYebe PC817 Optocoupler has been widely applied: Replace equipment parts,include as SCR system equipmen etc ...
Overview: 5mm LED light assortment kit includes 5 colors x 90pcs diodes-handy kit box ready for DIY lighting project. Head Diameter: 5mm Round; Pin Length: 18 mm ( Longer Part: Anode) / 17 mm ( Shorter Part: Cathode).
Electrical Parameters: Forward Voltage: Red/Yellow 2.0-2.2V; Blue/Green/White 3.0-3.2V; Max. Current: 20mA; Viewing Angle: 30 degree. Note: Due to varying voltages across different LED colors, please calculate in advance to achieve optimal lighting performance.
Wide Application: DiCUNO super bright 5mm LED diodes are widely used in DIY LED Projects, School Science Experiments, Signal Indicators, Car Decorations, Electronic and Electrical Experiments, Breadboard, etc.
Luminous Intensity: Red, 2000-3000mcd; Yellow, 3000-4000mcd; Green, 15000-20000mcd; Blue, 3000-4000mcd; White, 12000-14000mcd. Mini LED lights, yet deliver impressive brightness.
9 Optoelectronic Products deals are available from: Amazon, starting from $6.99.
The lowest price we found is $6.99 while the highest is $64.64. Prices for the best Optoelectronic Products deals average at $17.40.
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