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Description
Trolmaster Hydro-X Expander Station 4 4RS-2A (4RS-1)The TrolMaster Hydro X Expander Station 4 (4RS 2A) is a versatile and powerful module designed to expand the number of devices that can be controlled by the Hydro X system. Heres a detailed overview of its features, capabilities, and usage: Key Features: 4 Outlet Power Expansion: Universal Module: The 4RS 2A can be used with any of TrolMasters plug in style device modules. Sequential Activation: Each of the four outlets is activated with a 3 second
The TrolMaster Hydro-X Expander Station 4 (4RS-2A) is a versatile and powerful module designed to expand the number of devices that can be controlled by the Hydro-X system. Here’s a detailed overview of its features, capabilities, and usage:
Key Features:
-
4-Outlet Power Expansion:
- Universal Module: The 4RS-2A can be used with any of TrolMaster’s plug-in style device modules.
- Sequential Activation: Each of the four outlets is activated with a 3-second time delay to minimize inrush current, ensuring safe and stable operation.
-
240 Volt Trigger Cable:
- Device Control Integration: The trigger cable connects to your device/control module, activating the outlets when the device module is triggered by the Hydro-X system.
- High Capacity: The unit supports up to four devices with a total current capacity of 40A (4x 10A) at 240VAC.
-
Easy Installation:
- Power Circuit Requirements: Must be installed with a 240-volt power circuit. The internal terminals accept up to #6 AWG wire, simplifying the connection to the power source.
Applications:
- Grow Rooms/Greenhouses: Ideal for expanding the number of environmental control devices that can be managed by the Hydro-X system.
- Controlled Environments: Suitable for any setup requiring multiple devices to be controlled safely and efficiently.
Usage Scenarios:
- Lighting Systems: Control up to four grow lights with staggered activation to prevent power surges.
- Environmental Controls: Manage multiple fans, dehumidifiers, or other environmental control devices.
- Automated Systems: Perfect for integrating additional automated systems into your existing Hydro-X setup.
Package Contents:
- 1 x Expander Station 4 (4RS-2A): The main unit for expanding device control capabilities.
Pros:
- Flexible Expansion: Allows control of up to four additional devices, increasing the capacity of your Hydro-X system.
- Safe Operation: Sequential activation minimizes the risk of power surges.
- High Capacity: Supports a significant current load, making it suitable for high-power devices.
Cons:
- Regional Variants: The 4RS-2A is designed for Australian power standards; ensure you select the correct version (4RS-1 for USA).
- Compliance: This plug is not U.L. or E.T.L listed.
Ideal For:
- Horticulturists and Growers: Needing to expand their environmental control system to manage more devices.
- Environmental Control: Users looking to safely and efficiently control multiple devices within a controlled environment.
Usage Tips:
- Installation: Follow the included instructions for connecting the 4RS-2A to your power source and device modules.
- Sequential Activation: Be mindful of the 3-second time delay between each outlet activation to avoid overloading circuits.
- Power Requirements: Ensure your power circuit meets the 240-volt requirement and can handle the total load of all connected devices.
Package Contents Summary:
| Component | Description |
|---|---|
| Expander Station 4 (4RS-2A) | Main unit for expanding device control capabilities |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 1
Pray you don't need HP Support to set up printer
HP Support is the absolute worst.
If you have any setup issues with your HP printer, you're on your own. Their support is practically useless.
I’ve been on a two-hour call trying to get wireless printing working. I’ve been transferred to three different people, and none of them knew how to help. Now I’m stuck on indefinite hold (over 30 minutes and counting) with no resolution in sight.
I can print fine with a USB cable, but it simply will not print wirelessly no matter what we try.
Extremely disappointed and frustrated with HP right now.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Very capable large format color inkjet printer
This thing is big. It’s replacing our Brother color laser, which didn’t get a lot of use (but is great for quick and cheap prints).
The HP is longer in one dimension but less tall, so is roughly occupying the same space but with more wall visible (so looks less intrusive).
Heavy. I could (and did) lift it on my own but all the packing and instructions say for 2 people to lift it. It’s manageable but I see why there’s that warning.
Build quality is mostly plastic but sturdy enough for a static object. Scan lid opens easily, trays extend smoothly etc. Feels well build overall, no concerns.
You can download installation instructions using a QR code and it’ll guide you to also install the HP app. The app ideally requires an account, mandatory if you plan to free trial the Instant Ink I think.
I had an existing old HP account and used that. The setup was way enough but there’s a weird UI step in the app during pairing where the setup modal is blank grey with a greyed out “Next” button. Looks like it can’t find the printer. Wrong! Just hit Next to proceed. Weird and stupid and I wasted time figuring it out. Loses a star for that.
Other than that, setup went fine and test print came out decent. WiFi connected ok and it also has Ethernet. The Brother only has WiFi but is flaky / goes to deep sleep too often. Testing with WiFi has been fine but I feel better knowing I can hardwire into my switch if there are issues! The HP shows on the network as an AirPrint target, and my Mac found it without issue / set up its own drivers.
The fold out touch screen is nice, I wish it could be angled horizontally and not just vertically but it’s fine and responds predictably to touch.
Colors and text are bright and crisp. Not quite laser crisp but pretty darn close to these old eyes. The colors are also better / truer in my opinion.
Had issues with feeding vinyl sticker paper sheets, which repeatedly generated paper jam messages (at no point was the paper jammed) and wasted a lot of time. Willing to blame the paper / media (it’s slightly tacky) but our laser handled it ok.
When it finally did print, I noticed some print quality issues / flaws repeatedly in the same places. Unsure of the cause and doesn’t impact subsequent printouts on other paper.
Really like the ability to print larger (A3!) size. Note that scanning does not accommodate larger papers (up to Legal / same as the Brother).
The supplied ink installed easily but they shipped me more as part of the Instant Ink trial. Subscribed to the lowest tier, which is affordable-ish (they just raised the lowest tier to $1.99 for 10 prints per month) but still costlier than laser. Not a huge fan of vendor lock-in / subs but did see in the fine print that HP allows third party inks to be used, which is reassuring if the subscription doesn’t make sense long term.
While printing, the motion of the printer head caused my desk to shake. Worth bearing in mind if you plan on printing heavily while sharing a desk with it. Noise isn’t too bad, better than the laser printing noise we’re used to (lower frequency noise on the HP). I would not print during a zoom call though (noise + shaking).
At time of review, $350 for a large format printer with built in scanning (and Ethernet) seems pretty decent. It’s not a bargain but it’s fair.
Need to spend more time with other media and have ordered more paper types to test with. Will update if anything changes my rating but so far I feel like it’s a capable replacement for the color laser given our relatively modest print volume and need for higher quality color prints.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Reliable Wide-Format Office Printer – Versatile, Fast, and Feature-Rich
Reliable Wide-Format Office Printer – Versatile, Fast, and Feature-Rich
★★★★★
The HP OfficeJet Pro 9720 is a strong all-in-one wide-format printer designed for small offices or home office environments that need 11x17 printing capability. It handles printing, scanning, copying, and faxing in one unit, making it a very versatile productivity tool.
Print quality is sharp and consistent, especially for documents, presentations, and color graphics. The wide-format support is a major advantage for users who need larger prints like spreadsheets, posters, or marketing materials.
The automatic document feeder (ADF) and duplex printing features significantly improve efficiency, allowing for hands-free scanning and double-sided printing without constant manual input.
Wireless connectivity is stable and easy to set up, with good support for mobile printing from phones and laptops. It integrates smoothly into typical office networks.
Print speed is solid for an inkjet in this category, making it suitable for moderate to heavy office workloads. The included Instant Ink trial is a helpful bonus for managing ongoing supply costs.
Overall, this is a dependable and well-rounded wide-format all-in-one printer that delivers strong performance, convenience features, and good print quality for office environments that require flexibility and larger document output.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Definitely Not Your Average Home Printer
What a beast of a printer. First thing to know is this is definitely not your standard little home office printer size. This thing is more small business office sized, so make sure you actually have room for it before it arrives.
That said, the quality is exactly what I expect from HP. Setup was super easy and pretty painless overall. One quick tip though: remember to remove the cardboard insert from the paper tray before testing it because apparently I needed that reminder myself.
Print quality is excellent, especially for color documents and larger format stuff. Everything comes out sharp, vibrant, and professional looking.
The phone app is honestly one of my favorite parts. It makes it really easy to monitor ink levels, print from your phone, and troubleshoot without having to stand in front of the printer pushing buttons and getting annoyed.
The touchscreen is responsive, wireless setup was smooth, and overall it just feels like a solid well thought out machine. Definitely overkill for someone who only prints a return label twice a year, but if you print a lot or need larger format printing, this thing is fantastic.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Decent printer
The print quality and speed are great. I currently have several different printers for various needs (laser for work, sublimation for crafting, and this one is potentially replacing my ink jet, for stickers) and this one is faster and a nicer quality print than my similarly priced of a different brand. Sometimes (and for literally no reason that I've been able to identify) this printer decides it doesn't want to print. Exactly like every other printer I've ever owned, connectivity can feel chaotic.
Overall, all things considered, I think this a decent value for the money. It was easy to set up and get printing. Minimal packaging. Intuitive design. Up and printing within 5 minutes. I love the ability to print is larger formats.
I did not sign up for the free 3 months of ink club, so cannot comment on that. So far, the ink consumption feels typical for an inkjet printer.
Overall, this is a yes from me.
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Reviewed in the United States on June 6, 2026
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