Best Eletechsup in 2026

Working voltage: DC 12V/24V(6.5-25V)

Working current: 8-20MA

Input port voltage range: 5-30V

Working voltage: 5V version(DC 3.7-5.5V);

Working current: 7-13MA

Adapted sensor: SHT30 temperature and humidity sensor

DC 24V

12 photoelectric isolation Input ports (NPN low level active ).

With hardware reset function, with TVS anti-surge protection

24V DC 8 Channel DI-DO Modbus RTU RS485 Relay Board

8 photoelectric isolation Input ports (NPN low level active ).

With hardware reset function, with TVS anti-surge protection

Free PDF tutorial(more than 22 lessons) and clear listing in a nice package

The most economical kit based on Arduino platform to starting learning electronics for those beginners who are interested.

Lcd1602 module with pin header (not need to be soldered by yourself)

The MEGA complete starter kit with more than 200pcs components, premium quality and 100% Compatible with Arduino IDE

Free pdf tutorial in the cd (33 lessons)

Lcd1602 module and gy-521 sensor module with pin header ( no need to solder by yourself)

Terminal Block Breakout Module - for Arduino MEGA-2560 R3. the item has been soldered and assembled.

Terminal block pitch 3.5mm/0.138", wire size range 26AWG to 16AWG, strip length 5mm, screw M2 steel, pin header and cage copper.

With power on LED indicating. red reset button on the side. with a ICSP adapter connect header.

The item has been soldered and assembled. Support for Raspberry Pi 1 Model B+, Pi 2 Model B, Pi 3 Model B, Pi 3 Model B+, Pi 4 Model B, Pi Zero, Pi Zero-W.

Terminal block pitch 2.54mm/0.1", wire size range 28AWG to 18AWG, strip length 4.5mm, screw M1.6 steel, pin header and cage copper.

FR-4 fiber glass PCB, dual copper layers.

High precision ADS1115 16 Bit 4 Channel Analog-to-Digital ADC Converter

An easy to use I2C ADC Converter, with Programmable Gain Amplifier

Especially a good tool for Raspberry Pi that doesn't come with analog GPIO pins

This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip is like a rotary switch - it internally routes the common pin (COM in the schematic, SIG on the board) to one of 16 channel pins (CHANxx).

It works with both digital and analog signals (the voltage can’t be higher than VCC), and the connections function in either direction.

To control it, connect 4 digital outputs to the chip’s address select pins (S0-S3), and send it the binary address of the channel you want. This allows you to connect up to 16 sensors to your system using only 5 pins!

Prototype Screw/Terminal Block Shield Board Kit For Arduino MEGA-2560 R3.

FR-4 fiber glass PCB, dual copper layers, size 120mm x 78mm.

Pads grid / pitch 2.54mm / 0.1", hole diameter 0.8mm. Terminal block pitch 3.5mm / 0.138", hole diameter 1.2mm.

Pitch 3.81mm/0.15" screw terminal block.

Terminal block: wire range 26-16AWG, strip length 5mm, Metric M2 slotted screw.

FR-4 fiber glass PCB, dual copper layers.

Electronics-Salon RPi GPIO Expansion Module, for Raspberry Pi 3, Pi 2, Model B / B+, ZERO and ZERO-W. (For ZERO you must soldered a 2x20pin header in your Raspberry Pi ZERO).

One row GPIO port could change to be three rows GPIO ports

The item has been soldered and assembled, with 4x brass standoffs and 8x screws.

8 Digital/Analog inputs (multi-use)

Decode SPI, I2C, and 23+ more

Digital sample rate up to 500 MS/s, Analog sample rate up to 50 MS/s

PCF8574T IO Expansion Board

The main resources: PCF8574, I2C interface, the 8-bit parallel

Typical applications: for I / O resource constraints the MCU I / O expansion

This item has been assembled, and electrical test passed.

Pitch 3.81mm/0.15" screw terminal block.

FR-4 fiber glass PCB.

This item has been assembled, and electrical test passed.

Pitch 3.81mm/0.15" screw terminal block.

FR-4 fiber glass PCB.

This item has been assembled, and electrical test passed.

Pitch 3.81mm/0.15" screw terminal block.

FR-4 fiber glass PCB.

This item has been assembled, and electrical test passed.

Pitch 3.81mm/0.15" screw terminal block.

FR-4 fiber glass PCB.

This item has been assembled, and electrical test passed.

Pitch 3.81mm/0.15" screw terminal block.

FR-4 fiber glass PCB.

DIN Rail mount 8 Channel 10Amp SPDT Power Relay Module, DC 5V Version.

JS1-5V-F Power Relays. LED indicator for each relay channel. Darlington transistors circuit driving relay, improve the reliability of action.

DIN rail mount carrier: High quality Taiwan DINKLE fireproof nylon material DIN rail mount carrier (not China low quality carrier), can support width 35mm / 32mm / 15mm rail. FR-4 fiber glass dual layers PCB.

DIN Rail mount 8 Channel 10Amp SPDT Power Relay Module, DC 24V Version.

JS1-24V-F Power Relays. LED indicator for each relay channel. Darlington transistors circuit driving relay, improve the reliability of action.

DIN rail mount carrier: High quality Taiwan DINKLE fireproof nylon material DIN rail mount carrier (not China low quality carrier), can support width 35mm / 32mm / 15mm rail. FR-4 fiber glass dual layers PCB.

based on I2C interface of the I/O expansion module, 2 I/O scalable 8 I/O (can be used at the same time up to 8 PCF8574, expanded to 64 input/output (I/O)

Supports two interface type to access the target board: header or seat;Support I2C bus cascade (through the header, seat docking simulation,, at the same time using a plurality of I2C module)

the I/O resources in short supply and the MCU I/O expansion

DIN Rail Mount 20 Position 30A / 300V Screw Terminal Block Distribution Module.

Terminal Block Pitch 7.62mm/0.3", Strip length 8mm, Screws - M3,steel,Cr3+ Zn plated. Pin header and Cage - Brass.

Wire range 26AWG ~ 10AWG / 4mm square. Rated voltage 300V, rated current 30Amp(per position).

Compute Module DSI display adapter, 22PIN to 15PIN, allowing the Compute Module to use 15PIN DSI displays

Suitable for Compute Module IO Board,connecting with Compute Module 4 IO Board

Suitable for connecting with Waveshare Compute Module IO Board Plus

Terminal Block Breakout Shield Module - for Arduino MEGA-2560 R3. the item has been soldered and assembled.

Terminal block pitch 3.5mm/0.138", wire size range 26AWG to 16AWG, strip length 5mm, screw M2 steel, pin header and cage copper.

With power on LED indicating. red reset button on the side. with a ICSP adapter connect header.

MEGA2560 Screw Terminal Block Breakout Module with Aluminum Enclosure. With the adapter module you can easily extend Arduino MEGA2560 projects to industrial control applications. Applications for Arduino MEGA2560 R2 / R3 ( NOTE: the item not include Arduino MEGA2560).

Terminal block pitch 3.5mm/0.138", wire size range 26AWG to 16AWG, strip length 5mm, screw M2 steel, pin header and cage copper. With power on LED indicating, red reset button on the side, with a ICSP adapter connect header.

Support for Desktop, Panel mount, Wall-mount or DIN rail mount. DIN rail mount supports vertical or horizontal place mounting. Can support width 35mm / 32mm / 15mm rail.

This Metal Box is designed for Raspberry Pi Compute Module 4 IO Board, Mini computer chassis, robust and dust-proof, nice looking.

Make it easy to build your own Raspberry Pi CM4 mini PC. Precise cut-out with clear label,each cut-out is completely aligned with the connector

Comes with cooling fan, combined with the airflow vent, better heat dissipation

Support AC and DC control signal, Relay action LED indicator, relay coil protection by means of a freewheeling diode.

Panasonic JS1-5V-F 10Amp SPDT power relay.

Dinkle high quality fireproof nylon material DIN rail mount housing, can support width 35mm, 32mm and 15mm rail.