Garnet SeeLevel II 709 Monitoring System

I purchased this as my current sensor system always reads partial full with the black and grey tanks. Cleaning has not helped. Considered getting the better sensors out there but then heard there were problems with them. My tanks were 11 inches tall. That meant I could cut the sensors to 10.5 inches or 9 inches. 10.5 was on the edge of too long and 9 was too short. Tried 10.5 but wasn't getting 0% due to being too close to the bottom. Cut to 9 inches, so the tanks will not be fully empty when reading 0% or full when reading 100%. I don't mind that, since it lets me know when I am very close to full or empty, but have a little buffer. Haven't given it a test run yet, but looks good so far. One of the sensors was bad, but Garnet replaced it quicky on my word alone. Not bad service.

Very nice product and very easy to install.

Easy to install IF you tape the sensor in place to decide where you want zero to be. I set mine so I have 2 or 3 gallons left when it says zero. Works very well. Don't know why Tiffin doesn't fit them as original equipment.

Easy to install and works great

This is my fourth installation of this product. Twice for friends and twice for two different coaches that I own. The OEM level sensors worked poorly. The Garnet sensors work VERY well! It is so nice to know how full the waste tanks are! This device takes all the uncertainty away. I would definitely recommend this product to anyone who wants to know the status of the tanks with a definite degree of certainty.
I will say that the LPG level is NOT very accurate, but it wasn't with the OEM sensor, either. I believe the temperature prevents an accurate measurement.

Install was easy. Tank sides in the Balboa are "split" -- that is, they do not have a single continuous surfaces as they are plastic welded 3/4 from the top. That said, sensors still mounted easily and do provide readings. Fresh water (with flat sides) reads accurately; grey and black are relative based on the split level of the side of the tank. Am calibrating grey and black based on the amount of water used. I would recommend this product as it provides a better reading of the stock meeting on this trailer.

After years of guessing what the tank levels were and not willing or able to drill new holes in the tank for different probes I finely bought the Sealevel.. Installation was simple except for the limited space between tank and frame and the routing and support of the wires. Installation worked, now to see how well it lasts with external exposed tanks with the extra coating suggested by the install instructions.

Easy installation, easy setup, no false readings at all.
I think much better solution than trying to replace old, existing sensors on my 1988 Bluebird.

The sensors are very sensitive and need to be installed so that the wires to not cross over the reader boards. Had one bad sensor had to have a new one sent. Later needed another sensor so I could redo the freshwater tank as it was not reading correctly. Likely my installer not being careful. Now the fresh water tank reads very well in tenths. The Grey and Black seem to only read in .5 increments. Not sure if this is also an installer issue or not. I may need to purchase two more and redo the board placements. Not sure yet.

First the black wasn't reading correctly, advised to try to clean out the tank a bit, worked afterwards, but I thought a good tank wasn't necessary because the gauge tape was mounted on the exterior of the tank.

LPG scan even after calibrating after fill up reads inconsistently.

I will have to keep monitoring, it's winter now, so will know better after a summer season.

Finally a tank level gauge that reads right every time. Easy install, easy set up up. Wish I had this sooner. Would buy this level gauge without a doubt again.

100% satisfied

It was an easy install and sure seems to be very accurate. Its nice to know with confidence that you still have room for one more shower or the black tank isn't going to overflow.

On my RV it was a easy install. Did not have to add any wire. Used wires from original sensors.

This product came on the used RV we purchased. When shopping for a new RV the factory rep recommended ordering one to put on our new unit and send it to the factory to be installed. Prior to installation a question arose and we contacted Dyers. They handled the matter very professionally and proficiently.

a friend recommended this site for purchase. i did think the shipping was high but i guess it averaged out ok. i did have some trouble installing the product because my tanks are insulated and that had to be scraped off in a few places in order to find a good place to mount the sensors. i also think i misread the directions and placed the sensors more in the center of the tanks instead of right at the top but it still works better than the old system

Worked as advertised and very easy to install.

Like every other RV'r out there I was always worried about the tank levels as the LED system that came stock is not reliable.Since installing the SeeLevel II system I now have the piece of mind to trust what I see on the display.Very easy to install and wire.Wouldn't own an RV without it now!!!!!!!

In the four RVs I've had, I've never had an accurate gauge. Sure, they read correctly immediately after the sale, but after 2 or three empties of the black water tank, none has worked correctly. There's lots of advice about how to clean the sensors - Pine Sol, Calgon, Tide, ice cubes, etc. etc. You'd think that for what these rigs cost that the manufacturers would put in something that works. At long last, I now have a gauge that I can have confidence instead of trying to figure out the next technique that will clean the sensors.

It works very well. Just remember that, on tanks, it effectively tells you the percent of the tank height that has liquid in it. If the tank is oddly shaped the displayed percentage full will be off. But, since (in my case) the top of the suspended holding tanks are flat, the reading gets more accurate as it approaches 100% (full). That's when it really counts for me anyway. On my inside brick shaped fresh water tank, it is very accurate at all times.

While the displayed battery voltage is accurate, I have yet to calibrate the LPG reading so I can't say how that reading is.

New to RVing with a TT, I hated the standard tank level indicator Leds that were never accurate. My brother told me his Tiffin Alegro Bus had this SeaLevel II system. I researched it, ordered a 3 tank 709 system and installed it on my TT. I mounted 2 Displays - one outside in my TT's utility area and one inside the TT. We took a 5 day trip over Labor day and this new system worked perfectly. Wow .... I now know just what level my tanks are at. I started the trip with a 20% water/chem solution in my Black tank. The LED indcated 1/3 full. We drive 3 hours and when we got to Fort Wilderness and set up I checked the Tank levels - Black tank still indicated 20%, but the LEDs now indicated 2/3 full. Nothing was put in the Black tank, the leds (inside tank sensors) were wet from the trip and were giving false readings. This is a Great Product.

Ingenious design that works! You can usually get spot-on measurements at either the full or empty levels of the tanks but would be lucky to get a precise reading at both ends of the spectrum. Much of this shortcoming is due to the fact that the tanks are seldom manufactured in a box-shape. Most often they are "wedges". This introduces differences in the %-full readings depending on which side of the tank the sensors are mounted on. Of course this is not the fault of the sensors, merely the reality of the situation.

One other tank peculiarity is that some black or gray water tanks have a radius bottom which forces the sensor to be placed higher on the tank which lessons the sensitivity of the measurement until the contents reach the bottom of the sensor. Again, not the fault of the sensor, only the reality of the situation.

With a series of temporary sensor placements (highly recommended), this system will perform better than any other tank monitor I have seen in 25 years. Mine are placed so they are the most accurate for the fresh water tank as it approaches empty. The black and gray water tanks sensors are placed so that they are the most accurate when they approach full. Infinitely better knowing a % full or empty rather than the antiquated idiot lights installed by most manufacturers.

Really a great product.

In my trailer (which i didn't check before ordering) the tank heights (outside) are 4 (gray water), 5 (fresh water), and 8 (black water) inches. the standard sender that came with the unit (cut to 7.5 inches) works well on the 8 inch tank, not at all on the other two. replacing the one i had with the 6 inch long model (cut to 4 inches) worked with the 5 inch tank. there is no way to make the system work with the remaining 4 inch tank. Still, having more or less accurate (at least repeatable) indicators on 2 tanks is worth the money to me after 20 years of dealing with the completely useless system that came with the trailer. Check your tank heights before ordering. Getting information from garnet is rapid and accurate.