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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💡 Stay in the know, wherever the road takes you!

MULTI TANK MASTERY - Track fresh, gray, and black water tanks plus battery voltage all from one panel.
CUSTOMIZABLE AESTHETIC - Choose black or white to flawlessly match your RV’s interior vibe.
SEAMLESS 12 V SYSTEM SYNC - Effortlessly integrates with your RV’s 12V electrical system for real-time monitoring.
SLEEK SPACE SAVVY DESIGN - Compact 3¾” square panel fits perfectly without cluttering your dashboard.
INTUITIVE LIGHT INDICATORS - Quick-glance LED lights make tank levels instantly clear—no guesswork needed.

The RecPro M21 is a high-precision, compact RV tank level sensor monitor panel designed for seamless 12V system integration. It provides clear LED indicators for fresh, gray, and black water tanks as well as battery voltage, all housed in a durable, modern black or white faceplate that complements any RV interior.

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Manufacturer	RecPro
Part number	RP-M21
Item Weight	141 g
Item model number	RP-M21
Colour	Black
Style	Modern
Material	High-Density Plastic
Item Package Quantity	1
Cutting Diameter	4 Inches
Measurement Accuracy	High
Plug profile	Flange Mount
Specific uses	Monitoring tanks in recreational vehicles, mobile living spaces, and outhouses
Batteries included?	No
Batteries Required?	No
Item diameter	4 Inches

RecPro M21 RV Tank Level Sensor Monitor Panel | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)

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