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Horst Miracle Probe Sensors for RV Black Water Tanks - Qty 4

Item # T21301VP

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T21301VP - Probe Sensors Valterra RV Sewer
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T21301VP - Probe Sensors Valterra RV Sewer
Valterra Sewer System Maintenance - T21301VP
RV Sewer T21301VP - Probe Sensors - Valterra
T21301VP - Probe Sensors Valterra Sewer System Maintenance
RV Sewer T21301VP - Probe Sensors - Valterra
RV Sewer T21301VP - Probe Sensors - Valterra

  • Sewer System Maintenance
  • Probe Sensors
  • Valterra
Get an accurate reading of waste levels in your RV's black-water tank. Extra-long sensors are surrounded by Teflon to prevent false probe contact and incorrect sensor readings. Fits 3/8" diameter holes. Connects to existing wiring. Lowest Prices for the best rv sewer from Valterra. Horst Miracle Probe Sensors for RV Black Water Tanks - Qty 4 part number T21301VP can be ordered online at etrailer.com or call 800-298-8924 for expert service.


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  • Reviews (36)
  • Q & A (11)
  • Photos
  • Why etrailer?

Valterra RV Sewer - T21301VP

Get an accurate reading of waste levels in your RV's black-water tank. Extra-long sensors are surrounded by Teflon to prevent false probe contact and incorrect sensor readings. Fits 3/8" diameter holes. Connects to existing wiring.


Features:

  • Provides an accurate indication of waste levels in your RV's black-water tank
  • Prevents false probe contact and incorrect sensor readings
    • Delrin body and Teflon tube surround sensor to prevent liquid residue or sludge from sticking to sensor
    • Considerably longer than standard probes to prevent false readings from buildup on sides of tank
  • Easy to install - fits 3/8" diameter holes
    • Use existing holes or drill new holes next to existing probes
  • Designed for RVs built to RVIA, CSA, and IAPMO standards
  • Connects to existing wiring and monitors
  • Quantity: 4 probes


How Miracle Probes Work

The monitor for your RV's black water tank shows a full reading when electricity is flowing between the tank's sensors. This circuit of electricity is completed when there is water or sludge in your tanks. If your empty tank is showing a full reading, that means water and sludge has built up on the sensors or the sides of the tank. This buildup completes the electrical circuit to give you a false reading.


Teflon Tube on Horst Miracle Probe

Unlike other sensors, which are prone to false readings due to buildup, Miracle Probes are surrounded by Teflon. The Teflon covers each Miracle Probe like a roof, helping to prevent liquid residue or toilet paper from building up on the probe. In addition, Teflon is not a conductive material and sludge cannot stick to Teflon. Miracle Probes are also longer than standard sensors, which prevents the probes from making contact with sludge that builds up on the sides of the tank.


Because sludge cannot build up on the Miracle Probes, a complete electrical circuit is only made when your tank is full and the water or sludge in the tank makes contact with the copper tips of the probes. This means that you'll only see a full tank reading on your monitor when your tank actually needs to be emptied.


Installation

The probes easily install into your RV black water tank's existing 3/8" diameter holes. You can also drill new holes next to the existing holes.


First, remove the existing sensors from the holes in your black water tank and replace them with the Miracle Probes. Once you have pushed the Miracle Probes into the holes, tighten the nut on each probe to create a leakproof seal. Then connect existing wiring to the new probes.


Once installed, rotate the exterior stud so that the milled flat section of the stud is aiming down and the Teflon roof is covering the copper tip of the probe.



T21301VP Valterra Horst Miracle Probes for Motorhome Black Water Holding Tanks - Qty 4







Customer Reviews

Horst Miracle Probe Sensors for RV Black Water Tanks - Qty 4 - T21301VP

Average Customer Rating:  4.8 out of 5 stars   (36 Customer Reviews)

Get an accurate reading of waste levels in your RV's black-water tank. Extra-long sensors are surrounded by Teflon to prevent false probe contact and incorrect sensor readings. Fits 3/8" diameter holes. Connects to existing wiring.

- T21301VP

by:


These were easy to install. Most RV tanks have 3/8 inch holes but the old ones can be real stubborn to remove. I remove the electrical cable, loosen, not remove, the nut closest to the washer, then use curved needle nose pliers to give some decent leverage, you may find the bulged rubber won't give without tearing the rubber (not the tank) or a portion might drop back inside the tank. They'll likely just flush out eventually but a 3/8 wood bit drilling new holes can work too. Then installing was simple just make sure the flat part on the threaded part is level so your probe shield is aligned to protect the probe. 396113



- T21301VP

by:


I installed the probesin my black tank soon after I got them I found that I could not install them in the holes of the old ones so I plugged those holes with bolts and Silicone. The one's I purchased for the other tanks I haven't installed yet. I will install them before spring. I think the new probes are a little better but I still get wrong readings. It was difficult drilling holes because of the space around the tank 570615



- T21301VP

by:


These probes are exactly as shown. They installed easily once you removed the old probes. I emptied water into the tanks and the probes read correctly. The only thing i changed was the size of the metal washers that went between the nut and rubber bushing. I used the ones with the hood on them. Will see if they are effective the next time we camp. 563937



- T21301VP

by:


The black tank sensors were very easy to install. My old sensors are spin welded so I had to drill new holes. There were no instructions included but are available on the net. If manufacturers would pay attention to the fine print, "place the bottom - sensor 8" to 13" away from the others." we wouldn't have so much trouble with the readout. 339029


Comments

The new tank sensors make the KIP unite work right when mounted in the tanks 8 inches away from the bottom sensor.

Rgill - 02/05/2018

34214

- T21301VP

by:


Worked great, just installed them and now my black tank registers correctly. Took about an hour as I had to drill holes my original ones were the permanently installed type. I only installed the sensors for the 3 levels as the grounding sensor was in a spot that was too hard to access. This worked perfectly. 566051



- T21301VP

by:


Wonderful product. Soooo easy to install (drill new hole, insert probe correctly oriented and gently tighten seal jam nut, transfer electrical wire and secure - DONE) I have had no reoccurrence of error readings. Highly recommended. Excellent on time delivery. I am so pleased with this product. 555535



- T21301VP

by:


Ordered latch and hinges (heavy) for Cargo trailer door and new tank sensors (very light and somewhat delicate) for our RV. Arrived in just a couple of days packed all in one perfect box with excellent packaging. Another site should take lessons from etrailer. Great price AND made in the USA! 377269



- T21301VP

by:


No more 2nd guessing the black water levels. The probes perform as advertised and O haven't had a single false readout since installation. Easy to install. My high, high probe was a little hard to.reaxh, but that was due to the trailer configuration, and not the probe design. 574340



- T21301VP

by:


For a while, this will just be a review of etrailer as the installation of these probes will be 'another day' since the belly cover of our Montana will need to at least partially come down and this is just not a good time. etrailer has been great so far :-} 266840



- T21301VP

by:


They appear to help some with false readings but still have to rinse the black and grey tank after each dump to clean the sensors. Have to fill the tanks up with fresh water and dump a second time to clean the sensors so they work properly. 569333



- T21301VP

by:


I installed these in the virtical side of my blackwater tank. Original had qtr. and half on an angle snd I did not think that was right. On trip next week and will see how they work. Had to patch in some wire to reach. 314565



- T21301VP

by:


These are a great replacement for the factory sensors on our 10 yr old trailer. Sensor panel now has a chance to give a more accurate reading for the black tank. Easy to install. 486154



- T21301VP

by:


Arrived in a timely manner and installation was easy, mine were the same size as replacement. Have not used the tanks yet, going camping labor day weekend to test them out. 560120



- T21301VP

by:


Great product. Easy to install and they preform as advertised. Recommend them to any RV owner whose having trouble with their grey or black water level sensors 348352



- T21301VP

by:


Product looks to be high quality. Unfortunately these are not the correct sensors for my coach. I will keep them for somebody else that needs them. 466870



- T21301VP

by:


Very pleased, the probes are reliably working so far. Etrailer drop shipped the probes to ETI where they where installed. 465455



- T21301VP

by:


Product is as described, easy to install, and works perfect. Very easy transaction at a very fair price. 285103



- T21301VP

by:


Just received them. I have installed and will see. Ordering was easy, and shipment came on time. 562517



- T21301VP

by:


Awesome product, fast delivery and the best pricing I could find! Thank you etrailer.com! 565361



- T21301VP

by:


Installing them was easy. Took longer removing covers than it did to put them in. 378143



- T21301VP

by:


Seem to be working great, nice to know the levels in the tanks again! 503363



- T21301VP

by:


Well made product. Easy to install. Tank reading is now accurate. 387455



- T21301VP

by:


These things work GREAT that is all I can say 559053



- T21301VP

by:


Great design. Very easy to install. 388073



- T21301VP

by:


Very good product and great service 280179



- T21301VP

by:


Easy to install and work great! 278961



- T21301VP

by:


excellent after sales service 449225



- T21301VP

by:


Easy install and works great. 424644



- T21301VP

by:


Great product fast delivery. 373437


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Ask the Experts about this Valterra RV Sewer
Do you have a question about this RV Sewer?


  • Replacing Black Water Tank Sensors
  • You do not have to replace your sensors directly, but at the least you are going to want to install the Horst Miracle Probe Sensors # T21301VP next to your old sensors. They are positioned in a way that allows the reading to be as accurate as possible.
    view full answer...

  • Horst Miracle Probes for Gray and Black Water Tanks
  • For a Horst Probe for a black water tank you would want the part # T21301VP for a quantity of 4 or for a gray water tank you would need the part # T21302VP. The probes of these kits are straight and are not a knock-off. There was a design change though which helps prevent debris getting caught in the tank. If you check out the picture I attached you will see what was prone to happen with old design.
    view full answer...

  • Why Would Blank Tank Full Sensors Give False Full Reading When Sensors are New
  • When RV holding tank sensors incorrectly read full, it is typically due to residue. Since your trailer sat for a while it's very likely there is residue of some kind on the sensors. The best way to keep your tanks sensors working correctly is to take proper care of the tank itself. The waste tanks are more prone to sensor issues, simply because of the nature of the materials contained than fresh water tanks. What you need is a tank cleaner like the part # CAM41146 to break up everything...
    view full answer...

  • Can Valterra Horst Miracle Probe Sensors for Black Water Tank be Used in Gray Water Tank
  • I spoke with my contact at Valterra regarding the Horst Miracle Probe Sensors for Black Water Tanks # T21301VP referenced in your question. She stated that there is no reason you could not use a couple of the black water probes in your gray water tank. The primary difference between these and the Gray Water Probes # T21302VP is that the black water probes feature an extra coating/seal to protect them from debris. These sensors will work great in your tanks to provide an accurate indication...
    view full answer...

  • Compatibility of Valterra Black Water Tank Sensors with Existing System
  • The Horst Miracle Probe Sensors for RV Black Water Tanks - Qty 4 # T21301VP will work with an exiting system where the sensor is installed on the top. The probes easily install into your RV black water tank's existing 3/8" diameter holes or you can also drill new holes next to the existing holes. These sensors have a Teflon sleeve surround to prevent build up and give you a more accurate reading.
    view full answer...

  • Miracle Probe Sensors Work With Aladdin Black Water System
  • The Horst Miracle Probe Sensors # T21301VP are universal so they will work with your Aladdin black water setup in your coach.
    view full answer...

  • Recommended Black, Gray Water, and Fresh Potable Water Sensors for Level Monitoring System
  • We do not have any monitoring system for your water levels. We do however carry the sensors for the tanks that will connect to those monitoring systems. You can make your own system without a monitor with a simple light connected to a battery. You would simply connect power to the lowest level sensor an then mount a sensor at the desired level or levels and connect the positive wire of the light to the sensor and the ground of the light to any grounded metal surface. I recommend using...
    view full answer...

  • Troubleshooting Valterra Horst Black Water Tank Sensors Read Empty All the Time
  • Most likely a ground wire issue. There is one common ground wire between all tank sensor packs and frame. Quick test is to jumper between the bottom sensor and good ground, should read empty if tank is empty. Then you can jumper from the bottom sensor to the one above it for 1/3 and the one above that for 2/3 and the top one for full. If that works then check for the common ground wire. We have added ground wires in addition to the original one.
    view full answer...

  • Black Tank Sensors fro Aluminum Holding Tank
  • The Horst Miracle Probe RV Black Water Tank Sensors # T21301VP can be used on your aluminum holding tank since they have a rubber grommet that isolates the probe from the tank. When you tighten the first nut on the probe the grommet expands to provide a secure leak-proof seal at the hole. This allows the probe to work fine on aluminum as well as plastic holding tanks.
    view full answer...

  • Do the Valterra Horst Miracle Probe Sensors Need to be Cleaned
  • I spoke with my contact at Valterra regarding the Horst Miracle Probe Sensors # T21301VP referenced in your question. She stated that the probes do not require any kind of maintenance once installed and you will not need to clean them. Because the probes are surrounded by Teflon, they are not prone to liquid residue or debris buildup. She was not able to confirm an exact lifespan for the probes, however she did state that they are designed to last and there is no reason that they would...
    view full answer...

  • How Many Sensors Does RV Have For RV Black Water Tank
  • It should only have 4 sensors. That is the standard amount found on most RVs which is what the Horst Miracle Probe Sensors for RV Black Water Tanks # T21301VP is designed for.
    view full answer...


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Info for this part was:

Expert Research:
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Expert Research:
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Written by:
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Zach O
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