ESP32 PLC 21 Modular Controller 21 I/Os WiFi & Bluetooth

ESP32 PLC 21 Modular Controller 21 I/Os WiFi & Bluetooth

Marsoni

M251S

$224.50

Get it in 3 business days with 1 day shipping. Friday, May 29

ESP32 PLC 21 Modular Controller 21 I/Os WiFi & BluetoothESP32 PLC 21 Modular Controller 21 I Os WiFi & Bluetooth The ESP32 PLC 21 is a high performance, dual core programmable controller, ideal for industrial automation and monitoring. This open source based PLC offers 21 I O and allows expansion with 127 modules. Programmable with Arduino IDE, it facilitates flexible programming and real time monitoring, ensuring efficient integration into advanced industrial systems. x13 Inputs x6 Software configurable

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I finally got around to cleaning up the cable disaster on my home office desk and these grommets were exactly what I needed. They fit perfectly into the 2-inch holes I drilled, and the plastic feels surprisingly sturdy, not like that cheap, brittle stuff that snaps the moment you try to pop the cover back on. The little brush-like opening is a nice touch because it keeps the cords from sliding back down when they aren't plugged in, and the black finish looks really clean against my wood tabletop. For a 4-pack, the price was a total steal, and it honestly makes the whole setup look way more professional than just having raw holes in the desk. If humans are looking for a quick and cheap way to hide cord clutter, these are a solid bet.

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Reviewed in the United States on February 10, 2026

Verified Purchase

Amanda Schepeler

New York, US

★★★★★ 5

Great product

Size: 50mm/2inch, Color: Black, Number of Items: 4

Works as described. Love that it came with a hole drill bit!

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Reviewed in the United States on February 24, 2026

Verified Purchase

MKR

Lowell, US

★★★★★ 5

Desk grommet used on entertainment wall

Size: 50mm/2inch, Color: Black, Number of Items: 4, Size: 50mm/2inch, Color: Black, Number of Items: 4

I used this grommet for the entertainment center wall behind my TV and it looks good and works great. Came with all the tools I needed to cut the hole in the wall and install it.

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Reviewed in the United States on November 8, 2025