# How do you handle analog sensors? I wan to

**URL:** <https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372>\
**Category:** Industrial\
**Created:** [13 February 2026 16:54 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372 "2026-02-13T16:54:31Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Elindo586](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/elindo586/32/105439_2.png) [@Elindo586](https://discourse.nodered.org/u/Elindo586)\
**Post date:** [13 February 2026 16:54 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/1 "2026-02-13T16:54:31Z")

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So I want to do machine monitoring via node red.

The link below shows a waveshare unit that takes on/off switches and also able to do Modbus, but it doesn't have a setup to hook analog sensors to the unit.

^^ I am looking for a similar setup but with something that can use analog signals, process them via MQTT and send the status of the components to NodeRed for monitoring.

Would anybody have any recommendation of common hardware to use for this type of application?

The item in question is this one here... I just would like something similar but able to work with analog sensors:

> **[Industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard isolated RS485...](https://www.waveshare.com/esp32-s3-eth-8di-8ro.htm)**
>
> Industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard isolated RS485 interface, Built-in Xtensa 32-bit LX7 Dual-core Processor, With Multiple Isolation Protection Circuits | ESP32-S3-ETH-8DI-8RO

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [13 February 2026 17:45 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/2 "2026-02-13T17:45:02Z")

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Adam has a lot of options.

E.g: [https://www.semaphore-systems.co.uk/product/adam-6017-8-ch-isolated-analog-input-module-with-2-ch-do](https://www.semaphore-systems.co.uk/product/adam-6017-8-ch-isolated-analog-input-module-with-2-ch-do)

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**Author:** ![mudwalker](https://avatars.discourse-cdn.com/v4/letter/m/47e85d/32.png) [@mudwalker](https://discourse.nodered.org/u/mudwalker)\
**Post date:** [13 February 2026 17:45 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/3 "2026-02-13T17:45:22Z")

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You have cross posted and already have assistance from @TotallyInformation . Please keep to the one Topic, it save any confusion.

> [@Analog sensor -\> ESP Home -\> MQTT -\> Node Red](https://discourse.nodered.org/t/analog-sensor-esp-home-mqtt-node-red/100374/2):
>
> Most of (maybe all?) the microprocessors supported by ESPHome support analogue inputs: ESP8266 : Only GPIO17 (A0) can be used for ADC input. You can also measure VCC voltage directly by setting pin: VCC , useful for low-voltage detection in battery-powered setups. ESP32 : Multiple pins support ADC (e.g., GPIO32–GPIO39 for ADC1, GPIO0, GPIO2, GPIO4, etc. for ADC2). Use attenuation to measure voltages above 1.1V (e.g., 12dB for up to ~3.9V). RP2040 (Raspberry Pi Pico) : GPIO26–GPIO29 are availab…

@Steve-Mcl Posted while I was replying - sorry.

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**Author:** ![DWoodlock](https://avatars.discourse-cdn.com/v4/letter/d/49beb7/32.png) [@DWoodlock](https://discourse.nodered.org/u/DWoodlock)\
**Post date:** [3 March 2026 03:14 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/4 "2026-03-03T03:14:04Z")

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Would recommend click plus, since you posted this in the industrial section.

Cheap and can talk to whatever all kinds of ways.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [2 May 2026 03:14 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/5 "2026-05-02T03:14:59Z")

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