00:00Whether you're automating your workshop, building a custom PLC panel, or setting up a home irrigation rig,
00:05having dependable remote control makes all the difference.
00:09Today, we're checking out the top 5 RS-485 Modbus relay boards that give you serious industrial-grade switching without
00:16draining your wallet.
00:17I've tracked down the best deals currently available so you can get the right hardware for your project without any
00:23guesswork.
00:24First up is a super-versatile DMOS Remote I.O. Expansion Module that starts right around $15.79.
00:32What makes this one stand out is that it uses solid-state DMOS outputs rather than noisy mechanical switches,
00:38giving you silent operation and practically infinite switching cycles.
00:42Backed by an impressive 4.8-star rating, it's easily one of the smartest buys if you need quick,
00:47high-speed digital I.O. Expansion for an existing PLC or microcontroller setup.
00:52If you're running equipment in noisy, demanding environments,
00:56take a look at this 10-channel industrial-grade I.O. Expansion Board priced at $67.88.
01:02Yes, it's a bit pricier than typical hobby boards,
01:05but that extra cash goes directly into heavy-duty transient protection and robust electrical isolation.
01:11It's built like an absolute tank for industrial computers and factory floors,
01:16making it well worth the investment if you just want to wire it up,
01:18close the cabinet door, and never worry about it again.
01:22Coming in at number 3 is easily the best bang for your buck on this list, costing just $13.58.
01:29The killer feature here is the physical dip switch array right on the board,
01:33which lets you configure your slave address and communication parameters instantly without typing
01:38serial at commands. With an outstanding 4.9-star rating and relays capable of handling up to 10 or 20
01:45amps,
01:45it's an ultra-reliable choice for home automation hubs and quick prototyping.
01:50Next up, we've got this 8-way isolated relay control board priced at $29.26.
01:56The real highlight is the optocoupler isolation between your control logic and the relay outputs,
02:01which protects your main processor from dangerous back EMF spikes when switching inductive loads.
02:06If you're planning to drive beefy contactors, water pump solenoids, or AC motors,
02:11the peace of mind this board provides against electrical noise makes it worth every single cent.
02:17Finally, rounding out the top 5 is this massive 16-channel expansion board,
02:21which comes in a complete DAN rail enclosure for only $28.12.
02:26Holding a flawless 5-star rating, the fact that it includes a modular, professional DAN rail shell right out of
02:32the box
02:33saves you tons of time and eliminates the need to 3D print your own brackets.
02:37It packs an insane amount of switching power into a compact footprint,
02:41making it the perfect all-in-one hub for multi-zone lighting or complex smart home setups.
02:46That wraps up our favorite RS-485 Modbus relay boards.
02:51All the direct links to snag these modules at the best current prices are waiting down in the description below.
02:57If this video helped you find the right board for your next build, do me a favor to drop a
03:01like,
03:02hit subscribe, and let me know in the comments what project you're working on next.
