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SeeLeveL RV Holding Tank Monitor - Fresh, Gray, Black, Propane
(115 reviews)
Price: $121.48
In Stock
SeeLeveL
SeeLeveL RV Holding Tank Monitor - Fresh, Gray, Black, Propane
Part Number: SE34VR
In Stock
$121.48
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- All Info
- Reviews (115)
- Q & A (0)
- Photos
SeeLeveL Smart RV - SE34VR
- Propane Tanks
- Water Tanks
- Monitoring System
- SeeLeveL
- Digital Display
- Monitors Only
If your RV tank monitor readings change from 25% to empty in the blink of an eye, that's a problem. This monitor uses SeeLeveL sensors (sold separately) for single-digit accuracy. Also displays your propane level and battery voltage.
Features:
- Monitor displays the levels of your RV's fresh, gray, and black tanks at the push of a button
- Hardwires to SeeLeveL sensors (sold separately) mounted on the outside of the tanks
- Also detects battery voltage
- Can be wired to the remote sensor on your LPG tank gauge to read propane levels
- Checks status and signal strength of sensors using diagnostic mode
- Helps improve accuracy during install
- Alerts you of any errors or calibration issues with various display codes
- Codes explained with suggested solutions in user's manual
- Works with multiple monitors so you can check tank status from the service bay and inside your RV
- Installs easily - cut hole for recessed mount monitor and screw in place
- Includes pigtail needed for installation
- Existing wiring from your old tank monitor system can be used to ease install
Specs:
- Application: 3 holding tank systems
- Monitor dimensions: 4" wide x 2-13/16" tall x 1-1/4" deep
- Operating temperature range: 32 F - 140 F
- Operating voltage range: 11V - 16V
- 1-Year limited warranty
Note: SeeLeveL tank monitoring systems are not compatible with metal tanks.
Advanced RV Tank Monitoring
Traditional tank monitors have a reputation for being unreliable. Only a few sensors are installed inside, meaning that they usually only measure in quarter increments and can send false readings if they get dirty. When you're keeping an eye on how much fresh water you have, the difference between 25% full and empty means a lot, and that inaccuracy can be a problem.
The SeeLeveL tank monitoring system uses technology that can sense fluid levels from the outside of the tank. The sensors' flexible circuit board sticks in place and measures along its entire height. This makes it accurate in single-digit increments.
LPG Monitoring
Large RVs with permanent propane tanks often feature wired sensors on their gauges. These can go by different names, such as LPG gauge sensors, tank level monitors, remote ready dials, or R3D dials. If your RV has an interior panel for monitoring LPG levels, you know you're good to go with wiring already in place for an easy install. If you're not sure, check the tank itself. If the gauge has a wired sensor attached to it, you can connect it to the SeeLeveL monitor.
SeeLeveL sensors used for fresh, gray, and black tanks will not work on metal tanks of any kind, including LPG tanks.
Get the Model You Need
SeeLeveL monitors come in a variety of configurations depending on your specific requirements.
| Model | Fresh | Gray | Black | Galley | Propane | Water Pump Switch | Water Heater Switch | Bluetooth | Multiplex Compatible |
|---|---|---|---|---|---|---|---|---|---|
| SE94VR | ✔ | ✔ | ✔ | ||||||
| SE34VR | ✔ | ✔ | ✔ | ✔ | |||||
| SE44VR | ✔ | ✔ | ✔ | ✔ | |||||
| SE64VR | ✔ | ✔ | ✔ | ✔ | ✔ | ||||
| SE74VR | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
| SE67VR | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
| SE37VR | ✔ | ✔ | ✔ | ✔ | ✔ | ||||
| SE47VR | ✔ | ✔ | ✔ | ✔ | ✔ | ||||
| SE97VR | ✔ | ✔ | ✔ | ✔ | |||||
| SE84VR | ✔ | ✔ | ✔ | ✔ | |||||
| SE24VR | ✔ | ✔ | ✔ | ✔ | ✔ | ||||
| SE57VR | ✔ | ✔ | ✔ | ✔ | ✔ |
If you are replacing an old tank monitoring system, you'd want to check which functions are being provided by the existing panel. Some models incorporate switches for pumps or heaters or are providing information on propane levels. You'd want to pick the SeeLeveL monitor that can provide for all of these features.
709 Garnet Instruments SeeLeveL RV 3 Tank Monitor Display - Fresh, Gray, and Black Tanks - Battery Voltage and Propane Tank Monitor
Installation Details
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Alternate product found
Ratings & Reviews
4.8
115 reviews
by:
Scott
02/23/2025
I bought this SeeLeveL display to replace one which had stopped lighting up some of the LED segments. I just matched the display functions of the old one when I made my order using the product images on the etrailer website. The new one was a direct drop-in replacement. The connector pins on the new one were bent and had to be straightened which I did by hand with a key. Once plugged in and tested all the displays segments worked based on the tank levels at the time and were brighter than the old display. The display arrived within a few days of placing the order as predicted. I like the etrailer website and the service they provide.
by:
Aryeh
07/07/2026
Excellent service from e trailer unfortunately it is the wrong item to replace the one that is no longer operating.
by:
John
05/22/2026
This was a replacement panel for one of the same model that failed.. the new panel went into place and works well..
by:
Chris
06/21/2025
Great customer service fair price and follow thru…
Chris G
Chris G
by:
Paul
06/29/2026
by:
John
09/24/2022
by:
Jeff
10/12/2023
by:
Kirk
01/31/2023
by:
Robert
11/18/2022
by:
David
12/06/2024
After doing some you-tube research and chatting with the SeeLevel tech team, I felt safe that my unresponsive tank level reading was caused by a faulty tank sensor. This fixed the problem.
I am surprised, and delighted, that eTrailer has expanded their inventory to include RV parts. As always, great selection, helpful videos, fair pricing, and quick shipping all make for a swell experience. Thank you!
I am surprised, and delighted, that eTrailer has expanded their inventory to include RV parts. As always, great selection, helpful videos, fair pricing, and quick shipping all make for a swell experience. Thank you!
David
12/7/2025
Still working great. We sold the RV to a friend, and recently saw that the tank level sensors are still working as intended. Meanwhile we have upgraded to a Class A bus, and utilized etrailer for all our flat tow knowledge and equipment. Their full inventory and great customer service were extremely helpful getting our truck ready to tow behind the motor home. etrailer is So Much More than trailer hitches and wheels! My go-to for anything recreational.
by:
Mario
07/18/2026
I installed the system about a week ago. So far it is working beautifully! I have a 2022 Renegade Verona LE and the original Firefly system was never reliable. I installed the panel in my wet bay and use the Bluetooth feature to check the levels when I'm in the rig.
by:
Jeff
03/05/2026
This unit is not "Plug & Play. I am replacing the original (1yr old) SeeLevel II with the 7090-BTP7 and it would not work. Calling Garnet Tech support, the supplied pigtails with plug must be used. Wires from the RV need to be cross referenced.
by:
John
03/27/2026
eTrailer is my go to for trailer parts. Large inventory and they carry specialized replacement parts. Competiveky priced and fast shipping.
by:
Christoph
06/27/2026
Easy installation and they work great
by:
Rich
03/19/2026
Got it quickly and came as advertised and is working like it should very happy with it and etrailer was very easy to order it from. Will definitely buy from etrailer again
by:
David
02/24/2026
This was the item I needed. Informative videos, Fair price, fast delivery, fixed the gray tank reading issue. Thank you
by:
John
04/22/2026
not needed so I returned it, but not the fault of etrailer.
by:
Dale
10/05/2026
Arrived on time
by:
Dale
10/28/2025
The SeeLevel system has worked flawlessly. It is a vast improvement over the tank monitoring system that came with our Airstream.
by:
John W
08/12/2023
replaced the WGO OEM panel with this one as it had all the options that I needed and fit nicely into the same area... as with the sensors, it was an easy single-wire install (for the sensors) and gives a much more accurate indication of the tank status'... would highly recommend this product!
by:
Steve
11/01/2025
I'm looking forward to installing this in the rig to add blue tooth capability to the SeaLevel system. This will make it convenient to be outside of the rig while draining the tanks or adding fresh water.
by:
John
10/31/2025
Monitor works great. Fast shipping.
by:
Thomas
10/25/2025
Part repaired our tank sensor for our gray tank on our DRV.
by:
Dale
10/03/2025
Combined with the sensors perhaps the best upgrade to my trailer.
by:
Richard Crane
01/15/2024
I used one of these in another trailer and love it. That’s why I bought one for the trailer I am currently rebuilding. I had a sender problem with one tank and their customer service was wonderful helping me find a solution to the specific problem that existed.
Richard C.
1/16/2025
Perfectly!!!
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See what our Experts say about this SeeLeveL Smart RV
- Will the SeeLeveL RV Holding Tank Monitor Work w/out Hooking Up the Propane Sensor?It sure will Rod and welcome back. The SeeLeveL RV Holding Tank Monitor item # SE34VR will indeed function to monitor the battery and water levels on your fresh, gray, and black tanks without connecting the propane sensor. The propane monitoring feature obviously won't work so you'll want to cap off the propane wire when installing the system so you don't have to worry about the monitor shorting out. The SeeLeveL RV Holding Tank Monitor item # SE34VR is just the monitor. For the monitor...
view full answer... - How to Troubleshoot a Dim Display Screen on the SeeLeveL RV Holding Tank Monitor SE34VRWelcome back John. The display being dim on the SeeLeveL RV Holding Tank Monitor item # SE34VR can be addressed by holding down the BATT and GREY buttons for 5 seconds to enter programming mode. The display will show bri. Then you'll want to adjust the brightness from b-1 dim to b-4 bright. If this doesn't work you'll want to disconnect the battery and shore power, check all your connections, and then after at least 5 mins reconnect power to see if that fixes the display and gets the...
view full answer... - What is Needed for SeeLevel Propane Tank Monitor to FunctionHey Dean, so SeeLevel has a RV Holding Tank Monitor that includes ability to monitor propane tanks with the part # SE34VR but the gauge needs to wire to the remote sensors on the LPG tank. If there's no wiring there currently it wouldn't work without a remote sensor setup. See attached picture to see what that looks like normally. Its not super uncommon for there to be issues with black water sensors as they tend to foul out pretty easy. What's great about the SeeLevel systems is the...
view full answer... - Is There Surface Mount for SeeLevel MonitorHey Jim, we do not have a surface mount bracket for the Seelevel monitor part # SE34VR. Is cutting a hole possible at all?
view full answer... - Will SeeLevel Tank Sensors Work on a Fiberglass Tank?Hey Robert! The sensors that work with the SeeLeveL RV Holding Tank Monitor # SE34VR are compatible with fiberglass tanks as long as they aren't thicker than 3/8". We have a single 16" long sensor as part # SE27VR, but these are also available in a variety of kits and lengths. How many sensors were you looking to get, and do you know how long they're needing to be?
view full answer... - Is SeeLeveL RV Holding Tank Monitor Availabile With the SensorsYes, to get the SeeLeveL RV Holding Tank Monitor # SE34VR with the sensors you need the SeeLeveL RV Holding Tank Monitoring System # SE59VR. This comes with the same monitor along with 3 of the 12" long sensors you install on plastic tanks.
view full answer... - Is There An RV Water Tank Sensor That Can Be Mounted On The Side Of The Tank Instead Of Under It?Hey there John. The Mopeka sensor # MP59FR needs to be mounted on the bottom of the tank, so it won't work mounted on the side, but we have other solutions. If you don't have access to the bottom, a SeeLeveL setup would be the better option since the sensors mount vertically to the outside wall of the tank like you were looking for. You'd need the SeeLeveL monitor # SE34VR along with a sender sized for your tank, such as the 9" # SE88VR, 12" # SE78VR, or 16" # SE27VR. The correct sender...
view full answer... - Can the SeeLevel Sensor Be Used With a Simraine Pico Tank Monitor Mike, unfortunately not. The SeeLeveL Sensor for RV Holding Tank Monitor # SE78VR is designed to be used with the SeeLeveL RV Holding Tank Monitor # SE34VR, so it's not going to work with your Simarine Pico Tank Monitor.
view full answer... - Does the SeeLeveL II RV Holding Tank Monitor SE74RR Have Momentary Switches? Hey David, welcome back! The SeeLeveL II RV Holding Tank Monitor item # SE74RR has momentary switches on the tank selection and battery buttons. However, the water pump switch is an alternate-action toggle, rather than momentary. It sounds like you need the SeeLeveL RV Holding Tank Monitor item # SE34VR. This monitor has all momentary switches. When you press and release one of the buttons, it powers the LED display for that tank for about 5 seconds to show the levels in percent. If you...
view full answer... - Availability of SeeLevel Brand Sensors and MonitorsYes we do carry the SeeLevel brand of tank sensors and monitors. If you check out the link I attached to this page you'll see all of the options we offer.
view full answer...
Do you have a question about this Smart RV?
Info for this part was:
Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
Wilson B
Edited by:
Amanda M
Written by:
Cody B
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Brooke M.
2/25/2025
Hey Scott! I am so glad to know youre happier with the new display! Thanks for sending in the photo, too.