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#16 in Industrial Control (B2B)
Modbus RTU Relay Module 16 Channels (RS485, Industrial)
Industrial Control (B2B)

Modbus RTU Relay Module 16 Channels (RS485, Industrial)

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$63.35reference price

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Best for

Medium installations (up to 16 outputs) where the 32-channel module in this ranking would be more than you need.

  • 16 channels
  • RS485 Modbus RTU
  • Optical isolation

What is it and what's it for?

It's the same type of Modbus relay module as the 32-channel one in this ranking, but with half the outputs: for when you need remote control of several devices, but not enough to justify the bigger model.

Real-world use cases

At home

A medium-sized DIY home-automation project (for example, controlling irrigation, garden lights, and a few appliances) that doesn't need the big model's 32 outputs.

In a business or workshop

A small or medium production line that needs to control 16 different devices from the same Modbus system, without overpaying for channels it won't use.

How to avoid buying the wrong one

  • Count how many outputs you actually need — if fewer than 16, a smaller module might suit you better; if more, go straight to the 32-channel one in this ranking.
  • No reviews yet on Amazon, so there's no real buyer feedback beyond the spec sheet.
  • Has the same protections (optical isolation, TVS, resettable fuse) as the 32-channel model, so you're not giving up any safety for having fewer channels.

The investment takeaway

For medium installations, this module avoids overpaying for 32 channels you won't use, without sacrificing any of the larger model's electrical protections — the sweet spot between price and capacity.

Modbus RTU Relay Module 16 Channels (RS485, Industrial)

$63.35reference price

See current price on Amazon

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