---
product_id: 322523010
title: "M21 RV Tank Level Sensor Monitor Panel | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)"
brand: "recpro"
price: "¥16251"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/322523010-m21-rv-tank-level-sensor-monitor-panel-kib-replacement-panel
store_origin: JP
region: Japan
---

# 12V DC power integration Multi-tank level monitoring Compact 3.75" x 3.75" panel size M21 RV Tank Level Sensor Monitor Panel | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black)

**Brand:** recpro
**Price:** ¥16251
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** M21 RV Tank Level Sensor Monitor Panel | KIB Replacement | Panel Only | Fresh Water or Holding Tank Level Sensor (Black) by recpro
- **How much does it cost?** ¥16251 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/322523010-m21-rv-tank-level-sensor-monitor-panel-kib-replacement-panel)

## 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

- • **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 12V 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.

## Overview

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.

## Description

Details: Overall Dimensions: 3 ¾”W x 3 ¾”H Faceplate Dimensions: 3 ½”W x 3 ½”H Bolt hole spacing: 2 15/16”W x 2” H (hole center to hole center) K101 “pigtail” wiring harness included 12V DC Color: White or Black Easy readout Monitor tank levels Monitor battery level Control for water pump Controls for electric and gas water heaters

## 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 |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** RecPro
- **Item dimensions L x W x H:** 13 x 73 x 118 millimetres
- **Material:** High-Density Plastic
- **Item weight:** 0.14 Kilograms
- **Style:** Modern

## Images

![M21 RV Tank Level Sensor Monitor Panel | 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 **Colour Name** 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.

## 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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**Shop now:** [https://www.desertcart.jp/products/322523010-m21-rv-tank-level-sensor-monitor-panel-kib-replacement-panel](https://www.desertcart.jp/products/322523010-m21-rv-tank-level-sensor-monitor-panel-kib-replacement-panel)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-18*