Could this be tapped into an existing monitor system to act as a secondary monitor panel?

If you use the same sensors it will give you the same reading. If a sensor goes out, both systems will give you a false reading. If you want a secondary monitor get 4 more sensors then you would have a good secondary system.

all tanks are showing whatever the fresh water tank is reading. Might replacing this monitor fix that problem?

All is reading if there is problem for frish cheack sensore

Im confused. Does this come with the sensors to put onto/ into the tank? Or do i have to buy those separate?

It does not come with the sensors. It has the standard hook-ups that snap onto the sensor ends. My tank came with the sensors in it.

what sensors work best with this ?

Kib manufacturers the sensor packs. The probes aren’t super important.

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RecPro RV Tank Sensor Monitor Panel M21 Panel Only (Black)

Product ID: 187076133

Details

Brand
RecPro
Item Weight
0.14 kg
Item dimensions L x W x H
0.5 x 2.88 x
Material
High-Density
Style
Modern

💧Monitors fresh, gray & black tanks

📏Compact 4.63x2.88x0.5 inch size

🔋12V system compatibility

€ 61.53

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚐 Stay ahead on the road with smart tank monitoring—never run dry or get caught off guard!

SLEEK MODERN DESIGN - Available in black or white to perfectly complement your RV’s interior aesthetic.
BUILT TO LAST IN THE USA - Crafted from high-density plastic with a 60°C max temp rating for durable, reliable performance.
SEAMLESS 12 V INTEGRATION - Effortlessly connects to your RV’s 12V system for real-time battery voltage and tank updates.
DIY FRIENDLY INSTALLATION - Surface mount design and straightforward wiring make replacement or upgrade a breeze.
INSTANT TANK STATUS AT A GLANCE - Intuitive LED indicators simplify monitoring fresh, gray, and black water levels—no guesswork needed.

The RecPro RV Tank Sensor Monitor Panel M21 is a compact, high-accuracy digital display panel designed to monitor fresh, gray, and black water tanks plus battery voltage on 12V RV systems. Featuring easy-to-read LED indicators, a sleek modern design in black or white, and durable high-density plastic construction, it offers a reliable, DIY-friendly upgrade or replacement solution made in the USA.

Specifications

ASIN	B07XZJT5MJ
Best Sellers Rank	#174,034 in Automotive ( See Top 100 in Automotive ) #129 in RV Water Pumps & Accessories
Brand Name	RecPro
Customer Reviews	4.4 4.4 out of 5 stars (294)
Item Dimensions	0.5 x 2.88 x 4.63 inches
Item Weight	0.14 kg
Manufacturer	RecPro
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 Name	Modern
UPC	193652017509
Unit Count	1 Count
Upper Temperature Rating	60 °C

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 61.53

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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