Renogy’s ONE Core is a 4-inch touchscreen panel that mounts flush in an RV, van or cabin wall and pulls together energy monitoring, an RV leveling sensor and smart-home automation in one device. According to Renogy’s U.S. product page, the current G3 version connects over Bluetooth LE and Mesh, Wi-Fi on both 2.4GHz and 5GHz, Zigbee 3.0, RS-485 and CAN, and supports RV-C communication. Renogy listed it at $186.99 on Oct. 17, 2026, with a 2-year warranty. This guide walks through what it monitors, how the mounting and setup work, and how much power it uses itself.
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Specs and setup steps come from Renogy’s product page and FAQ for the Renogy ONE Core. Check that the listing you buy is the G3 version described here. We haven’t installed one ourselves, so this guide doesn’t include hands-on results.
ONE Core G3 Specs
| Spec | Renogy ONE Core (RSHGWSN-W02W-G3) |
|---|---|
| Display | 4-inch touchscreen, 480 × 480 |
| Operating voltage | 8–35V DC (5V via USB-C) |
| Wireless | Wi-Fi 802.11a/b/g/n, 2.4GHz and 5GHz; Bluetooth LE and Mesh; Zigbee 3.0 |
| Wired | RS-485 and CAN; supports RV-C |
| Built-in sensor | RV leveling sensor |
| Installation | Flush mount, 55mm (about 2.17-inch) hole |
| Size / weight | 4.17 × 4.17 × 1.05 in; 0.28 lb |
| Operating temperature | -4°F to 158°F |
| Humidity / altitude | 0–95% RH; below 5,000m |
| In the box | ONE Core, 5m power cable, quick guide, 4 M3.5 × 14mm screws (1 spare) |
| Certifications | CE, FCC, RoHS, TSCA, BQB, IC-ID |
| Warranty | 2 years |
| Price (Renogy U.S., Oct. 17, 2026) | $186.99 |
What It Monitors and Controls
- Energy: 24/7 monitoring of compatible Renogy devices, like charge controllers, DC-DC chargers, inverters and batteries, over Bluetooth or RS-485. Renogy publishes a downloadable compatible-devices list on the product page.
- Batteries: Renogy says it works as a battery monitor with Renogy batteries that support Bluetooth, either built in or via BT-1/BT-2 modules, and RS-485.
- Shunts: it doesn’t include a shunt, but Renogy says it works with the Shunt 300 if you need one. Our Renogy Shunt 300 review covers that device.
- RV leveling: a built-in leveling sensor helps you level the rig when you park.
- Remote monitoring: through the DC Home app and Renogy ONE Portal, from anywhere with an internet connection.
- Automation and security: it acts as a smart-home hub for Zigbee accessories like door-entry alerts, climate sensors and motion detection. Renogy says it can’t guarantee compatibility with third-party Zigbee 3.0 devices.
Setup, Step by Step
Renogy describes a three-step mounting process. Here’s that sequence with the planning steps around it:
- Pick a location. Choose an interior wall near your entry or main living area, where you’ll see it daily. Make sure there’s space behind the wall for the body and cable, and plan a route for the 5m power cable to your 12V or 24V distribution.
- Cut the hole. Renogy specifies a 55mm-diameter hole punch. Check for wires, pipes and studs behind the wall first.
- Level the stand. The mount has an embedded bubble level, so align it before tightening the screws. This matters more than usual, because the leveling sensor uses the panel’s orientation as its reference.
- Mount the panel. Per Renogy, rotate the panel onto the stand until it clicks in place.
- Connect power. Wire the power cable to a fused 8–35V DC circuit, so it works on 12V or 24V systems. It can also run from 5V USB-C, which is handy for testing on a bench.
- Pair devices. Install the DC Home app, add the ONE Core, connect it to Wi-Fi, then pair your Renogy devices over Bluetooth or wire them via RS-485.
- Check leveling. Park on a known level surface and confirm the leveling reading. If the app offers a calibration step, run it there so future readings are accurate.
Renogy says installation doesn’t need a professional. If you’re not comfortable cutting into an RV wall or wiring a fused circuit, an RV technician can do it quickly.
How Much Power the Panel Uses
Renogy publishes the ONE Core’s own consumption at 12V, which is worth knowing for off-grid use since it runs around the clock. The daily totals are our calculations.
| State (at 12V) | Power (Renogy) | Per day, if left in this state (calculated) | Amp-hours per day at 12V |
|---|---|---|---|
| On, Wi-Fi on, 100% screen brightness | 3.2W | ~77Wh | ~6.4Ah |
| On, Wi-Fi on, 50% brightness | 2.4W | ~58Wh | ~4.8Ah |
| On, Wi-Fi on, screen off | 1.9W | ~46Wh | ~3.8Ah |
| Off, logger still active | 1.5W | ~36Wh | ~3.0Ah |
On a 100Ah lithium battery, that’s roughly 3–6% of capacity a day. Dimming the screen makes a real difference: dropping from full brightness to 0% saves about 31Wh a day. For storage periods, it’s worth knowing that even “off,” the logger draws about 1.5W, so disconnect it at the fuse or battery switch if the RV will sit for weeks. Our 100Ah battery runtime guide shows how small loads add up.
Connectivity Notes
- Wi-Fi: works on 2.4GHz and 5GHz networks. Renogy says it doesn’t support WPA3 encryption, so if your RV router uses WPA3-only, set it to WPA2 or a WPA2/WPA3 mixed mode.
- Remote access: remote monitoring needs an internet connection in the rig, such as a cellular router or a Starlink. Our Starlink Mini power guide covers powering one off-grid.
- RV-C: the G3 version supports RV-C, the communication standard many newer RVs use for system data.
- Updates: Renogy pushes new features and fixes through over-the-air updates.
ONE Core vs a Simple Battery Monitor
| Need | ONE Core | Shunt-based monitor alone |
|---|---|---|
| See battery state of charge | Yes, with compatible batteries or a Shunt 300 | Yes |
| See solar, charger and inverter data together | Yes, for compatible Renogy devices | Usually no |
| Wall-mounted touchscreen | Yes | Depends on the model |
| Remote monitoring | Yes, via app and portal | Usually Bluetooth range only |
| RV leveling, security sensors | Yes | No |
If you only need a state-of-charge reading, a shunt and phone app is simpler. The ONE Core makes sense when your system is mostly Renogy gear and you want one screen for everything.
Wiring the Power Feed
The ONE Core draws well under an amp, so its power circuit is simple, but it should still be done properly:
- Fuse it. Feed it from a fused circuit on your DC distribution panel or fuse block. Use a small fuse appropriate for the supplied cable, following Renogy’s quick guide.
- Decide on always-on or switched. Wiring it ahead of your main battery disconnect keeps monitoring and remote access running all the time. Wiring it after the disconnect lets you shut it off fully for storage.
- Plan the data runs. Bluetooth works without cables, but RS-485 needs a wired connection to compatible devices. Route those cables at the same time as the power cable so you only open the wall once.
- Use the 5m cable wisely. The included cable is long enough to reach most fuse blocks in a van or small trailer; in a larger RV, you may need to splice in a properly sized extension.
Using the Leveling Sensor
The built-in sensor turns the panel into a digital level for the whole rig. Because it’s measuring the panel’s orientation, it only works well if the panel was mounted level and checked on flat ground. Once that’s done, the routine at a new campsite is simple: park, check the display, add blocks or adjust jacks on the low side, and check again. It saves walking around the rig with a bubble level.
Automation Ideas
With Zigbee accessories, Renogy describes scenes and alerts such as door-entry notifications, climate sensors and motion detection. A few practical setups owners commonly use with hubs like this:
- An alert when a door opens while you’re away from the rig.
- A temperature alert if the interior gets too hot for pets or too cold for water lines.
- Motion detection inside the RV while it’s in storage.
Pair Renogy’s own accessories where possible, since third-party Zigbee compatibility isn’t guaranteed.
Who It’s For
- Renogy system owners with compatible controllers, DC-DC chargers, inverters or batteries.
- Full-time RVers and van lifers who want remote monitoring and alerts.
- Owners of newer RVs with RV-C networks.
- Cabin and tiny-home owners on 12V or 24V systems who want a central display.
For a broader look at RV electrical upgrades, see our RV lithium battery conversion guide.
FAQ
Does the Renogy ONE Core come with a shunt?
No. Renogy says it’s compatible with the Shunt 300, sold separately.
What voltage does it run on?
8–35V DC, so it works on 12V and 24V systems, or 5V via USB-C.
How big a hole does it need?
Renogy specifies a 55mm-diameter hole, about 2.17 inches.
Does it support 5GHz Wi-Fi?
Yes, both 2.4GHz and 5GHz. It doesn’t support WPA3.
Does it work with non-Renogy devices?
Monitoring is designed around Renogy devices; check Renogy’s compatible-devices list. Renogy can’t guarantee third-party Zigbee 3.0 accessories will work.
How much power does it use?
1.5W to 3.2W at 12V, depending on screen brightness and whether it’s on, per Renogy.
Bottom Line
The Renogy ONE Core G3 turns a Renogy-based RV or van system into something you can check at a glance on the wall, or from anywhere through the app, with leveling and smart-home features on top. Plan the mounting location, fuse the power feed, dim the screen to save energy, and pair it with a Shunt 300 if your batteries don’t report state of charge on their own.