---
product_id: 82992162
title: "FS-C02 G3/4\" BSP Male Thread Water Flow Switch 0-2A/ 0-220V(AC or DC) for Shower Flow Water Heater"
brand: "digiten"
price: "€ 29.69"
currency: EUR
in_stock: true
reviews_count: 8
category: "Digiten"
url: https://www.desertcart.sk/products/82992162-fs-c02-g3-4-bsp-male-thread-water-flow-switch
store_origin: SK
region: Slovakia
---

# 0-220V AC/DC operation Flow range 1-50L/min Brass build for durability FS-C02 G3/4" BSP Male Thread Water Flow Switch 0-2A/ 0-220V(AC or DC) for Shower Flow Water Heater

**Brand:** digiten
**Price:** € 29.69
**Availability:** ✅ In Stock

## Summary

> 💧 Flow smart, heat fast — the switch your water heater deserves!

## Quick Answers

- **What is this?** FS-C02 G3/4" BSP Male Thread Water Flow Switch 0-2A/ 0-220V(AC or DC) for Shower Flow Water Heater by digiten
- **How much does it cost?** € 29.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/82992162-fs-c02-g3-4-bsp-male-thread-water-flow-switch)

## Best For

- digiten enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Easy Install:** Small footprint with threaded mount fits tight spaces effortlessly
- • **Code-Compliant Efficiency:** Supports CA Title 24 compliance by activating recirculation pumps smartly
- • **Precision Flow Activation:** Triggers heating at ≥1.0L/min flow for instant comfort
- • **Robust Brass Construction:** Corrosion-resistant, waterproof, and built to last under pressure
- • **Universal Voltage Compatibility:** Operates seamlessly on 0-220V AC or DC for versatile setups

## Overview

The DIGITEN FS-C02 is a compact, brass water flow switch designed for precise activation of water heaters and related systems. Operating across 0-220V AC/DC with a flow detection range of 1-50L/min, it ensures energy-efficient heating by triggering circuits only when water flows. Its robust, waterproof design meets RoHS standards and supports compliance with regulations like California's Title 24, making it an essential upgrade for modern, eco-conscious homes and professional setups.

## Description

Main application Mainly used for water heater, boiler, water dispensers, coffee machines, hot card machines, steam equipment, water system, selling self-help water systems, water treatment equipment, cooling systems, mechanical equipment,instrumentation, pharmaceutical equipment ,etc. Water flow switch is a very important part in the instant water heater. When there is a certain water flow through the water flow switch and flow rate is ≥1.0L/min, electric circuits is connected and water heater begin to heat. In contrast，when the water flow stops, the water heater stops working. . Specifications:Working range: 1-50L/minOperation voltage: 0-220V(AC or DC) Mini start water pressure: 0.02Mpa Max working pressure: 1.75MPa Max loading power:50W Working current: 0-2A Response time: 0.2S Temperature Resistance Range: 80℃F=7.5Q-4(L/min) Accuracy:±3%Male Thread External Diameter:25.4mm(1Inch) Tube Length:60mm(2.36Inch)Cable Length:23cm(11.81Inch)Size:60mm*36mm*30mm(L*W*H) Packing Including:Flow sensor switch x 1

Review: Flow Switch for Tankless water heater for CA title 24 compliance. - This product is used on my tank-less water heater to activate the re-circulation pump. I just momentary turn on than off any faucet in my house for a second and the flow switch activates the re-circulation pump. This is needed to be in compliance with title 24 of CA code. A re-circulation pump is not allowed to be on a timer or on full time. Instead the code requires an activation button located near each faucets. This works better as you don't needed multiple buttons! There is a plastic flow switch but its max flow rate is below the 11gpm of my tank-less. This has a higher flow rate. Note: This flow switch has BSP threads you will need to use BSP to NPT adapters.
Review: Installed with some effort - I installed this on the cold water supply of my hot water heater to activate my hot water circulation pump. This reduces the amount of water I waste getting hot water to the other side of the house. I am using a RaspPI to activate a solid-state relay for a fixed amount of time once flow is detected. Pros: This is a solid brass construction and there is no barrier penetration between the water and the switch. There is a magnet inside the fitting to detect flow and the magnetic sensor does not have direct contact with water. It requires a flow of about ~1GPM to activate. Cons: The thread IS NOT 3/4" NPT-Male. It is a Metric BSPT 3/4" Male thread. It is straight mechanical thus requiring a hose washer. I had to purchase a brass adapter to convert from BSPT to NPT and that fitting cost as much as this sensor. This manufacturer should offer this product threaded in both NPT and BSPT.

## Features

- Made of brass, It is waterproof, heat resistant, pressure resistant and cold resistant. Small size and easy to install. All materials are in line with ROHS testing standards.
- Note: It can't be connected to a load directly, and the relay board must be connected first.
- Operation voltage: 0-220V(AC or DC), Working current: 0-2A, Max loading power:50W.
- Outer diameter: 1 inch (25.57mm)
- Mainly used for water heater, boiler, water dispensers, coffee machines, hot card machines, steam equipment, water system, selling self-help water systems, cooling systems ,etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G77169W |
| Actuator Type | Plunger |
| Best Sellers Rank | #602,480 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,551 in Water Heater Replacement Parts |
| Brand Name | DIGITEN |
| Circuit Type | 1-way |
| Connectivity Protocol | X-10 |
| Connector Type | Male Thread |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Control Method | Touch |
| Current Rating | 2 Amps |
| Customer Reviews | 3.7 3.7 out of 5 stars (55) |
| International Protection Rating | IP54 |
| Item Dimensions | 2.36 x 1.18 x 1.1 inches |
| Item Weight | 0.01 Ounces |
| Manufacturer | Ditigen |
| Material Type | Brass |
| Model | FS-C02 |
| Mounting Type | Threaded Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operating Voltage | 220 Volts |
| Operation Mode | automatic |
| Specification Met | RoHS |
| Switch Type | ['Flow Switch'] |
| Terminal | Screw |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 80 Degrees Celsius |
| Wattage | 50 watts |

## Product Details

- **Brand:** DIGITEN
- **Connector Type:** Male Thread
- **Contact Type:** Normally Open
- **Current Rating:** 2 Amps
- **Item dimensions L x W x H:** 2.36 x 1.18 x 1.1 inches
- **Material:** Brass
- **Operating Voltage:** 220 Volts
- **Operation Mode:** automatic
- **Switch Type:** ['Flow Switch']
- **Terminal:** Screw

## Images

![FS-C02 G3/4" BSP Male Thread Water Flow Switch 0-2A/ 0-220V(AC or DC) for Shower Flow Water Heater - Image 1](https://m.media-amazon.com/images/I/71OGWd3yrtL.jpg)

## Questions & Answers

**Q: If i have a gravity feed water line running through this can i make this device turn on a pump?  12V?**
A: Hello, it work with 12V, if the gravity is higher than 0.02MPa, it can turn on a pump.

**Q: Another question what is the ID of the water passage**
A: Not sure of the exact measurement but it was pretty small. Also, if you intend on using this with anything more than about 12 Volts and 500 mA I would look elsewhere as this thing will not perform anywhere near the quoted specs. Even worse after it failed on the first use, it failed in the on poition.

**Q: I want a 1 inch digiten fs-c0 1" bsp male thread water flow switch 0-2a/ 0-220v(ac or dc). do you have?**
A: Sorry. The ones I have I am using in my home system.

**Q: I wondering how much this flow switch restricts water flow? Some of the 3/4 inch flow switches I have seen have very restricted water flow.**
A: I’ve not noticed any change in flow since I installed it on the hot water line for our bathtub/shower.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Flow Switch for Tankless water heater for CA title 24 compliance.
*by C***D on June 4, 2022*

This product is used on my tank-less water heater to activate the re-circulation pump. I just momentary turn on than off any faucet in my house for a second and the flow switch activates the re-circulation pump. This is needed to be in compliance with title 24 of CA code. A re-circulation pump is not allowed to be on a timer or on full time. Instead the code requires an activation button located near each faucets. This works better as you don't needed multiple buttons! There is a plastic flow switch but its max flow rate is below the 11gpm of my tank-less. This has a higher flow rate. Note: This flow switch has BSP threads you will need to use BSP to NPT adapters.

### ⭐⭐⭐⭐ Installed with some effort
*by L***S on March 28, 2020*

I installed this on the cold water supply of my hot water heater to activate my hot water circulation pump. This reduces the amount of water I waste getting hot water to the other side of the house. I am using a RaspPI to activate a solid-state relay for a fixed amount of time once flow is detected. Pros: This is a solid brass construction and there is no barrier penetration between the water and the switch. There is a magnet inside the fitting to detect flow and the magnetic sensor does not have direct contact with water. It requires a flow of about ~1GPM to activate. Cons: The thread IS NOT 3/4" NPT-Male. It is a Metric BSPT 3/4" Male thread. It is straight mechanical thus requiring a hose washer. I had to purchase a brass adapter to convert from BSPT to NPT and that fitting cost as much as this sensor. This manufacturer should offer this product threaded in both NPT and BSPT.

### ⭐ Getting bad after 10 days
*by B***. on January 17, 2025*

It’s working good for to weeks only and got bad Not recommended

## Frequently Bought Together

- DIGITEN FS-C02 G3/4" BSP Male Thread Water Flow Switch 0-2A/ 0-220V(AC or DC) for Shower Flow Water Heater
- GESHATEN 3/4” G Thread (BSP) Female to 3/4” NPT Male Connector, Brass BSP to NPT Adapter 3/4 Inch, Industrial Metal Brass G Thread to Pipe Fittings Connect (2 Pack)
- DIGITEN FS-C02 G3/4" BSP Male Thread Brass Water Flow Switch 1-30L/min, 0-2A/ 0-220V(AC or DC)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-11*