Waveshare Industrial 8-Ch Analog Acquisition Module, 12-Bit High-Precision, Supports Voltage and Current Acquisition, DC 7~36V Wide Voltage Power Supply, 8-ch Voltage Mode, 0~10V

These are Chinese units and the UI system for programming is a little hard to navigate but by golly they work well. I’m using it to collect analog inputs from 8 silo level transmitters and communicate with an MQTT wireless gateway (automation direct), and it works flawlessly. So impressed I bought a few more of their modules to mess around with.

This little A/D converter has been working great for me! I have it connected to an ESP32 controller and Home Assistant, and it's accurate, stable, and inexpensive. Very happy! :)

Funciona muy bien. Estoy feliz con la compra. Un poco difícil de conseguir el manual pero si navegas un poco lo encuentras.

First off, it works, and the Waveshare implementation of the Modbus RTU (RS-485) comm interface is consistently solid across all their products. At $33 when I bought mine, it's quite inexpensive - certainly massively so when compared to 16 bit implementations from places like Advantech. But the scaling on mine is consistently off on all 8 channels: with 20.000mA applied (precision calibration source) all channels read ~19.75mA, which is admittedly within the claimed accuracy of <3%, but the step size should be ~4.8uA so ~250uA is kind of gross - the factory calibration is not terrible, but certainly is not great. A significant, and highly recommended product improvement would be to allow in-field calibration factors as part of the Modbus map - somewhere in the 40xxx register range...

We're using this industrial 8-channel analog acquisition module to bring in 12-Bit high-precision analog levels via or RS-485 bus. We're very happy with the results and continue to fine tune how we use it to monitor various functions.

This Waveshare 8-channel analog acquisition module delivers precise 12-bit inputs that handle voltage and current measurements from 0–10 V. I’ve been using it in my test bench, and it reliably captures signals with minimal drift. The wide 7–36 V input range makes it flexible for different setups. It integrates easily with microcontrollers and data loggers, making configuration straightforward. Overall, it’s a dependable and professional-grade solution for multi-channel analog sensing.

Works flawlessly

Sehr gute Dokumentation. Elektronik Industriequalität

AUN LO TENGO EMPAQUADO, PERO SE VE DE BUENA CALIDAD.

Purchased two of these, both stopped communicating after a short period. Don't waste your time or money.

At the beginning it works well, so I bought 5 pieces, but when you disconnect power supply from terminal block with 24VDC power supply (Phoenix or Weidmuller DIN rail industrial) the device has broken, something in the power supply of the device has some issue. This is happen with 3 of 5, the same problem.