---
product_id: 310058327
title: "Replacement Fresh Water or Holding Tank Level Sensor RV Monitor M21 Panel (Black)"
brand: "recpro"
price: "2753117₫"
currency: VND
in_stock: true
reviews_count: 6
category: "Rec Pro"
url: https://www.desertcart.vn/products/310058327-replacement-fresh-water-or-holding-tank-level-sensor-rv-monitor
store_origin: VN
region: Vietnam
---

# 12V DC power integration Multi-tank level monitoring Electric & gas heater controls Replacement Fresh Water or Holding Tank Level Sensor RV Monitor M21 Panel (Black)

**Brand:** recpro
**Price:** 2753117₫
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead on the road with smart water level control!

## Quick Answers

- **What is this?** Replacement Fresh Water or Holding Tank Level Sensor RV Monitor M21 Panel (Black) by recpro
- **How much does it cost?** 2753117₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/310058327-replacement-fresh-water-or-holding-tank-level-sensor-rv-monitor)

## 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 with intuitive LED indicators.
- • **Dual Heater Control:** Switch between electric and gas water heaters with a single panel.
- • **Sleek Interior Match:** Available in black or white to complement your RV’s style.
- • **Compact & Durable Design:** Small footprint with robust build ensures long-lasting performance.
- • **Seamless 12V System Sync:** Effortlessly integrates with your RV’s power for real-time monitoring.

## Overview

The RecPro RP-M21 is a compact, durable RV monitor panel that integrates with 12V systems to provide clear LED indicators for fresh, gray, and black water tank levels, battery voltage, and controls for both electric and gas water heaters. Available in black or white, it blends seamlessly into your RV interior while delivering reliable, real-time monitoring and control.

## Description

Details: Overall Dimensions: 3 ¾W x 3 ¾H Faceplate Dimensions: 3 ½W x 3 ½H Bolt hole spacing: 2 15/16W 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.

Review: سعر جدا مناسب
Review: للأسف لا يوجد دليل المستخدم ، و لا موقع المنتج في الأنترنت

## Features

- This durable monitor is available in black 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
- Controls for electric and gas water heaters

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XZJT5MJ |
| Brand | RecPro |
| Customer Reviews | 4.4 4.4 out of 5 stars (258) |
| Date First Available | 20 September 2020 |
| Item Weight | 141 g |
| Item model number | RP-M21 |
| Manufacturer | RecPro |
| Manufacturer Part Number | RP-M21 |
| Product Dimensions | 1.27 x 7.32 x 11.76 cm; 141 g |

## Product Details

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

## Images

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

## 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

### ⭐⭐⭐⭐ Review
*by B***R on 10 January 2022*

سعر جدا مناسب

### ⭐ Review
*by M***O on 28 February 2023*

للأسف لا يوجد دليل المستخدم ، و لا موقع المنتج في الأنترنت

### ⭐⭐⭐⭐⭐ Review
*by B***T on 9 June 2025*

Fitted to a 1987 companion camper. Works great 👍💯

## 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)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/310058327-replacement-fresh-water-or-holding-tank-level-sensor-rv-monitor](https://www.desertcart.vn/products/310058327-replacement-fresh-water-or-holding-tank-level-sensor-rv-monitor)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-01*