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🚐 Stay ahead on the road with smart tank monitoring—never run dry or powerless again!
The RecPro RV Tank Sensor Monitor Panel M21 (Black) is a compact, high-accuracy digital monitor designed for 12V RV systems. It tracks fresh, gray, and black water tank levels plus battery voltage, featuring a simple push-button LED display and built-in water pump control. Made in the USA with durable high-density plastic, it offers easy surface mounting and a modern aesthetic to seamlessly blend with your RV’s interior.




| ASIN | B07XZJT5MJ |
| Best Sellers Rank | #118,008 in Automotive ( See Top 100 in Automotive ) #96 in RV Water Pumps & Accessories |
| Brand | RecPro |
| Brand Name | RecPro |
| Customer Reviews | 4.4 out of 5 stars 296 Reviews |
| Item Dimensions | 0.5 x 2.88 x 4.63 inches |
| Item Highlight | 12V Battery Level, Built-in Water Pump Control Switch, Simple Push Button Readout, Made in USA |
| Item Weight | 0.14 kg |
| Item dimensions L x W x H | 0.5 x 2.88 x 4.63 inches |
| Manufacturer | RecPro |
| Material | High-Density Plastic |
| Material Type | High-Density Plastic |
| Maximum Supply Voltage | 12 volts_of_direct_current |
| Measurement Accuracy | High |
| Measuring Range | 6.00 - 12.85 volts_of_direct_current |
| Model | RP-M21 |
| Mounting Type | Surface Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Type | Digital |
| Part Number | RP-M21 |
| Style | Modern |
| Style Name | Modern |
| UPC | 193652017509 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 60 °C |
J**!
Great Replacement Tank Sensor Panel
Perfect replacement for our Lakota horse trailer with living quarters. Easy to install yourself.
R**L
Top
Top
J**.
looks and works well
Looks identical to the old one mounted in my camper. I just swapped the boards. it was a little tight but I made it work and it looks and works well.
B**D
It works
I purchased this monitor to replace a very old monitor. The wiring was very different but the directions were very straight forward. The hardest part was figuring out which old wires were coming from which tank. The only color wire that was the same color was the grey tank and it was surprising grey. The lights are nice and bright and I didn't have to push real hard to get the lights to work, unlike my old monitor. The only reason I didn't give it a five star is that it isn't as nice as some of the other monitors that cost 10x the amount this one did.
D**E
Exactly as described. Very courteous. Highly recommended seller.
Exactly as described. Very courteous. Highly recommended seller.++++++
M**M
Easy to use - simple device
It's not as exact as some other monitors I've tried, but it also doesn't need its own DC connection (since it uses the one you'll have for a water pump). Instructions are a bit confusing but if you watch the rec pro video it makes sense. We paired with these level sensors. https://amzn.to/4bM1SVt
B**R
Great product
Super easy to install and works as it should.
M**W
Direct replacement for older unit....works great!
Our original Micro monitor started acting up a year ago. I finally gave up trying to fix it and bought this as a replacement. The main panel with circuit board is a snap-in fit with our older one (circa 2014, but the design dates back to the early 90s). The buttons are a little harder to push than the original, but that's no big deal. And the main Molex style connector has more pins on it, but the wiring is exactly the same, so it's plug and play. 10 sec replacement.
É**D
Aucun she shéma de branchement, donc il faut avoir une base en électricité
Très bon produit de remplacement!
M**O
منتج غير واضح
للأسف لا يوجد دليل المستخدم ، و لا موقع المنتج في الأنترنت
B**R
جوده ممتازه
سعر جدا مناسب
P**L
Good Product
Seems like a good product
E**E
RV
Works great.
Trustpilot
1 day ago
3 weeks ago