---
product_id: 27600376
title: "TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread"
brand: "presair trol by senasys"
price: "117826₫"
currency: VND
in_stock: false
url: https://www.desertcart.vn/products/27600376-tnp411rv-1-8pf-pool-spa-pressure-switch-21-amp-spst
store_origin: VN
region: Vietnam
---

# 21 Amp high load capacity Precision set at 1.8PF ±10% 1/8 NPT standard mounting thread TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread

**Brand:** presair trol by senasys
**Price:** 117826₫
**Availability:** ❌ Out of Stock

## Summary

> 💧 Keep your pool pressure perfectly balanced with precision power!

## Quick Answers

- **What is this?** TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread by presair trol by senasys
- **How much does it cost?** 117826₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/27600376-tnp411rv-1-8pf-pool-spa-pressure-switch-21-amp-spst)

## Best For

- presair trol by senasys enthusiasts

## Why This Product

- Trusted presair trol by senasys brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Specialty Design:** Built to withstand pool and spa environments for long-term use
- • **Powerful 21 Amp Capacity:** Handles demanding pool and spa systems with ease
- • **Universal 1/8 NPT Thread:** Easy installation with standard plumbing fittings
- • **Precision Pressure Setting:** Calibrated at 1.8PF ±10% for reliable performance
- • **Single-Pole Single-Throw (SPST) Switch:** Simple, effective on/off control for your system

## Overview

The TNP411RV-1.8PF is a robust pool and spa pressure switch featuring a 21 Amp rating and SPST configuration. It is factory-set at 1.8PF with ±10% tolerance and mounts easily via a 1/8 NPT thread, ensuring precise and reliable pressure control for your aquatic systems.

## Description

TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF (+/- 10%), 1/8 NPT Mounting Thread

## Features

- TNP411RV-1.8PF
- Pool/ SPA Pressure Switch

## Images

![TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread - Image 1](https://m.media-amazon.com/images/I/415FTWuePTL.jpg)
![TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread - Image 2](https://m.media-amazon.com/images/I/31t2FQjx1CL.jpg)
![TNP411RV-1.8PF Pool/ SPA Pressure Switch, 21 Amp, SPST, Set at 1.8PF, 1/8 NPT Mounting Thread - Image 3](https://m.media-amazon.com/images/I/41AurCuY3vL.jpg)

---

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**Shop now:** [https://www.desertcart.vn/products/27600376-tnp411rv-1-8pf-pool-spa-pressure-switch-21-amp-spst](https://www.desertcart.vn/products/27600376-tnp411rv-1-8pf-pool-spa-pressure-switch-21-amp-spst)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-20*