---
product_id: 562778218
title: "Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400)"
brand: "reinmoson"
price: "¥16671"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/562778218-reverse-osmosis-system-with-smart-faucet-nsf-certified-tds-reduction
store_origin: JP
region: Japan
---

# 400 GPD flow rate TDS monitoring 2.5:1 pure to drain Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400)

**Brand:** reinmoson
**Price:** ¥16671
**Availability:** ❌ Out of Stock

## Summary

> 💧 Drink Smart, Live Pure!

## Quick Answers

- **What is this?** Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) by reinmoson
- **How much does it cost?** ¥16671 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/562778218-reverse-osmosis-system-with-smart-faucet-nsf-certified-tds-reduction)

## Best For

- reinmoson enthusiasts

## Why This Product

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

## Key Features

- • **🚀 High Efficiency:** Tankless design delivers up to 600 GPD, filling a cup in just 7 seconds.
- • **💡 Smart Monitoring:** Real-time TDS insights for ultimate water quality control.
- • **⚡ Quick Installation:** Set up in just 10 minutes with included adapters and tubing.
- • **🌍 Eco-Friendly Savings:** 2.5:1 pure to drain ratio saves you up to 250% on water bills.
- • **🔒 Comprehensive Filtration:** 7-stage filtration reduces 1000+ contaminants for pure, great-tasting water.

## Overview

The Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System (RMS-WP-RO400) is an NSF certified under-sink water filtration solution that offers a remarkable 400 GPD flow rate, real-time TDS monitoring, and a 2.5:1 pure to drain ratio. With a compact design and easy installation, it features a premium 7-stage filtration process that effectively reduces over 1000 contaminants, ensuring you enjoy clean, safe, and delicious drinking water.

## Description

Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400)

## Features

- 【Looking for Filter Replacements】: Please replace the PPC filter annually and the RO filter every 2 years. You can find the PPC/RO filters on desertcart by searching for 'PPC filter for Reinmoson RMS-WP-RO400' and 'RO filter for Reinmoson RMS-WP-RO400'.
- Smart Faucet with TDS Monitoring and Filter Lifespan Reminding: RO drinking water filter system Offers real-time monitoring of your water's Total Dissolved Solids (TDS), giving you instant insights into the quality of your filtered water. Additionally, the faucet's sensor was enhanced for more precise TDS measurement. Plus, the convenient filter life indicator alerts you when it's time for the RO/PPC filter replacement.
- User Friendly: This ro system under sink measures 15.66” L x 4.48” W x 11.81” H, taking up minimal space under your sink. Additionally, Installation takes only 10 minutes with included 3/8 or 1/2 feed water adapters(Notice: you need to check out the machine with the B0CB13TSXV at NO Cost), pre-install tubing and adapters, and drain saddle. Additionally, our innovative Front-loading filter design allows for quick and easy filter replacement in just 3s, without the hassle of moving objects around the unit.
- Updated 400GPD & 2.5:1 Pure to Drain Ratio: Tankless reverse osmosis system offers faster water flow, actually reaching up to 600 GPD, thanks to our innovative Tubing Design. It can fill a 200ml cup of water in just 7s. Besides, 2.5:1 pure to drain ratio allows you to save up to 250% more on water bills compared to other 1:1 reverse osmosis filter. Offering an economical alternative to bottled water and being environmentally friendly (as no tank means no secondary pollution).
- Premium 7 Stages Filtration: RO water filtration system has 7 stages filtration to reduce 1000+ contaminants and improve the taste of water. The RO filter(3 Stages) + PPC(4 Stages) adopts 0.0001-micron reverse osmosis membrane to decrease TDS from 500 ppm to 15 ppm and intercept sand, particles, salt, PFAS, radioactive substances(Radium), fluoride, heavy metals, vinyl chloride, Ethylhexyl acrylate, isobutylene, ethylene glycol

## Product Details

- **Brand:** Reinmoson
- **Special Feature:** Reduce TDS, Tankless, NSF certified
- **Product Dimensions:** 15.66"L x 4.48"W x 11.81"H
- **Package Information:** Cartridge
- **Installation Type:** Under Sink
- **Power Source:** Corded Electric
- **Model Name:** RMS-WP-RO400
- **Lower Temperature Rating:** 104 Degrees Fahrenheit
- **Maximum Flow Rate:** 1520 Liters Per Day
- **Upper Temperature Rating:** 203 Degrees Fahrenheit

## Images

![Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) - Image 1](https://m.media-amazon.com/images/I/61+ec6jhYeL.jpg)
![Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) - Image 2](https://m.media-amazon.com/images/I/71LAw20U3KL.jpg)
![Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) - Image 3](https://m.media-amazon.com/images/I/71yiYBCmUAL.jpg)
![Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) - Image 4](https://m.media-amazon.com/images/I/61+n2udZwwL.jpg)
![Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400) - Image 5](https://m.media-amazon.com/images/I/61Jn8NKUIhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to Use, compact, good quality of water
*by T***A on July 6, 2025*

Excellent Water filter, easy to use. I've been using this water filter for a several months. It's compact. The setup was straightforward-no tools or specific skills needed.The taste of the water is biggest win. It's noticeably cleaner, with no chlorine aftertaste or odor. It's great for drinking, cooking, and even making coffee and tea -everything tastes better.Highly recommend if you're looking for an affordable, reliable way to improve your tap water quality!

### ⭐⭐⭐⭐⭐ Easy to install and works great
*by P***E on December 16, 2024*

I purchased this mainly to supply scale-free water to an opal ice maker. This kit was very easy to install, I only needed to find one threaded adapter for my smaller 3/8 water lines. Everything else was included, and went together easily with no leaks. Very thoughtful design, such as the water inlet/output on top, in a small well, for easy inspection or service. I really like the filter status and TDS lights on the faucet itself - love how integrated and compact the whole thing is. Changing the filter is very easy. Quiet and takes care of itself with auto flush and pump built-in. Would recommend - especially at the price, it is an excellent value.

### ⭐⭐⭐⭐⭐ Price, use, ease of mind
*by R***A on December 6, 2024*

My wife and I used to buy 8-10 gallons of purified water from the store weekly. The struggle with loading and unloading was too real. Looked into multiple under counter RO water system. Most of the RO systems I was looking at were pricy. I stumbled across this one and had to give it a try for the price. Not only that, the waste water ratio was way lower than the rest too. Set up was a little longer that it said it was, but that's time in a lab. Still was a breeze to get all set up and running. Love the DTS read out on the water spout. Would never go back to buy gallon water jugs again.

## Frequently Bought Together

- Reverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400)
- 2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-12*