---
product_id: 187076133
title: "RV Tank Sensor Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)"
brand: "recpro"
price: "$U2951"
currency: UYU
in_stock: true
reviews_count: 13
category: "Rec Pro"
url: https://www.desertcart.uy/products/187076133-rv-tank-sensor-monitor-panel-m21-kib-replacement-panel-only
store_origin: UY
region: Uruguay
---

# Monitors fresh, gray & black tanks Compact 0.5x2.88x4.63 inch panel 12V system compatible RV Tank Sensor Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)

**Brand:** recpro
**Price:** $U2951
**Availability:** ✅ In Stock

## Summary

> 🚐 Stay ahead on the road with smart tank monitoring!

## Quick Answers

- **What is this?** RV Tank Sensor Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black) by recpro
- **How much does it cost?** $U2951 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/187076133-rv-tank-sensor-monitor-panel-m21-kib-replacement-panel-only)

## Best For

- recpro enthusiasts

## Why This Product

- Trusted recpro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Upgrade:** Snap-in fit replaces older units effortlessly in under 10 seconds
- • **Multi-Tank Monitoring:** Track fresh, gray, and black water levels with intuitive LED indicators
- • **Sleek & Durable Design:** High-density plastic panel available in black or white to match your RV interior
- • **Battery Voltage Insight:** Keep tabs on your RV battery health alongside tank levels
- • **Precision You Can Trust:** High measurement accuracy ensures you never run dry or overflow

## Overview

The RecPro RV Tank Sensor Monitor Panel M21 is a compact, high-accuracy digital display panel designed for seamless 12V RV systems. It monitors fresh, gray, and black water tanks plus battery voltage, featuring a durable high-density plastic build and easy snap-in installation that fits older models. Available in black or white, it blends modern style with reliable performance to keep your RV running smoothly.

## Description

Buy RecPro RV Tank Sensor Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black): Replacement Parts - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works great - Fitted to a 1987 companion camper. Works great 👍💯
Review: 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.

## Features

- This durable monitor is available in back or white to match with your interior.
- The easy to understand display uses lights to indicate levels.
- Once tied into your 12V system it will keep an eye on your fresh, gray, and black tanks as well as your battery voltage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XZJT5MJ |
| Brand | RecPro |
| Customer Reviews | 4.5 4.5 out of 5 stars (272) |
| Date First Available | September 17, 2019 |
| Item Weight | 5 ounces |
| Item dimensions L x W x H | 0.5 x 2.88 x 4.63 inches |
| Item model number | RP-M21 |
| Manufacturer | RecPro |
| Manufacturer Part Number | RP-M21 |
| Material | High-Density Plastic |
| Maximum Supply Voltage | 12 Volts (DC) |
| Measurement Accuracy | High |
| Measuring Range | 6.00 - 12.85 volts_of_direct_current |
| Mounting Type | Surface Mount |
| Output Type | Digital |
| Product Dimensions | 0.5 x 2.88 x 4.63 inches |
| Style | Modern |
| UPC | 193652017509 |
| Upper Temperature Rating | 60 Degrees Celsius |

## Product Details

- **Brand:** RecPro
- **Item Weight:** 0.14 Kilograms
- **Item dimensions L x W x H:** 0.5 x 2.88 x 4.63 inches
- **Material:** High-Density Plastic
- **Style:** Modern

## Images

![RV Tank Sensor Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black) - Image 1](https://m.media-amazon.com/images/I/81lmHiD2aTL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Could this be tapped into an existing monitor system to act as a secondary monitor panel?**
A: 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.

**Q: all tanks are showing whatever the fresh water tank is reading. Might replacing this monitor fix that problem?**
A: All is reading if there is problem for frish cheack sensore

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

**Q: what sensors work best with this ?**
A: Kib manufacturers the sensor packs. The probes aren’t super important.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by B***T on June 9, 2025*

Fitted to a 1987 companion camper. Works great 👍💯

### ⭐⭐⭐⭐⭐ Direct replacement for older unit....works great!
*by M***W on October 3, 2020*

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.

### ⭐⭐⭐⭐⭐ Exactly as described. Very courteous. Highly recommended seller.
*by D***E on January 24, 2026*

Exactly as described. Very courteous. Highly recommended seller.++++++

## Frequently Bought Together

- RecPro RV Tank Monitor Panel M21 | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)
- RecPro RV Water Screw-in Tank Probe Sensors | Fresh, Gray or Black Water Tank | Made in USA | 6 Pack
- RecPro Replacement Tank Wire Harness | Fresh Water | Gray Water | Waste Water Holding Tank | KIB Sensor Probe Harness (4 Harnesses)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-25*