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4x4 matrix membrane keypad
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4×4 matrix membrane keypad

4x4 matrix membrane keypad with 16 keys for Arduino, Raspberry Pi, and microcontroller input projects.

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1x5 tactile keypad switch module
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1×5 tactile keypad switch module

1x5 tactile keypad switch module with five clicky buttons for Arduino, Raspberry Pi, and microcontroller projects.

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bi-directional logic level converter
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bi-directional logic level converter

Bi-directional logic level converter for safe 3.3V ↔ 5V signal translation in microcontroller projects.

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ENC28J60 Ethernet Module
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ENC28J60 Ethernet Module

ENC28J60 SPI Ethernet module for adding wired LAN connectivity to Arduino, ESP, and other microcontrollers.

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DB9 Female RS232 to TTL Serial Port Converter Module
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DB9 Female RS232 to TTL Serial Port Converter Module

DB9 female RS232 to TTL serial converter module for interfacing RS232 devices with microcontrollers.

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USB to RS485 TTL Serial Converter Adapter with an FT232 chip
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USB to RS485 TTL Serial Converter Adapter with an FT232 chip

USB to RS485 TTL serial converter adapter using FT232 chip for reliable industrial and embedded communication.

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TTL to RS485 converter module
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TTL to RS485 converter module

TTL to RS485 converter module for long-distance, noise-resistant serial communication with microcontrollers.

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MAX485 to TTL RS485 converter module
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MAX485 to TTL RS485 converter module

MAX485-based TTL to RS485 converter module for long-distance, noise-resistant serial communication with microcontrollers.

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CP2102 USB to RS232 serial converter module
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CP2102 USB to RS232 serial converter module

USB to RS232 serial converter module based on CP2102 chipset, suitable for programming, debugging, and RS232 device communication.

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HL-340 USB to RS232 converter cable
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HL-340 USB to RS232 converter cable

USB to RS232 serial converter cable using HL-340 chipset, ideal for connecting PCs to CNC, PLC, modems, and other RS232 devices.

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PL2303 TA USB to TTL 4 Pin Cable
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PL2303 TA USB to TTL 4 Pin Cable

USB to TTL serial converter cable based on PL2303TA chipset with a 4-pin interface, ideal for Arduino, ESP, GPS, and embedded development.

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Roboway 0.56-inch DC 4.5-30V two-wire digital voltmeter
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Roboway 0.56-inch DC 4.5-30V two-wire digital voltmeter

Roboway 0.56-inch DC 4.5–30V two-wire digital voltmeter—compact, accurate voltage monitor for DIY electronics, batteries, and solar systems.

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