Fire Protection Testing & Monitoring Equipment Guides

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WFD Water Flow Detector by System Sensor

What is a Flow Switch or Water Flow Detector in a Fire Sprinkler System?

In this edition of the Fire Sprinkler System Components series, we discuss a water flow detector, or flow

Pitot Gauge Kits for Fire Hose Testing & Hydrant Flow Tests

Learn about the features of pitot gauge kits—including the gauges, blades, tubes & more—and how they make testing

What’s a Firefighting Playpipe and Why Do We Call It That?

QRFS looks at the origins and historic use of the term "playpipe," explaining how firefighting playpipe became the

How Does a Water Motor Gong Work in Fire Sprinkler Systems?

Alarm gong systems deliver warning that sprinklers are operating—even if the power goes out. Learn exactly how they

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Sprinkler Supervisory Switch Electrical Specs: The Basics

November 5, 2025

A sprinkler supervisory switch, whether it’s a flow, tamper, or pressure switch, has specific electrical specs. Learn more about these numbers.

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smoke detector tester and co detector tester

Carbon Monoxide & Smoke Detector Testers: How Long Do They Last?

August 14, 2025

Smoke and CO detector testers are essential for verifying that alarm systems function properly. But know the shelf life of smoke and CO cartridges!

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Explosion-Proof Equipment in Fire Protection Systems

January 1, 2025

In some hazardous environments, essential but standard fire protection devices could actually cause fires! Learn about explosion-proof equipment that helps prevent these issues, including flow switches, tamper switches, and other devices.

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How to Protect Gauges from Overpressure and Damage

July 17, 2024

Pressure spikes can damage gauges. Prevent gauge overpressure damage by understanding ratings, employing best practices, & using snubbers.

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Test & Monitor: All Articles

Sprinkler Supervisory Switch Electrical Specs: The Basics

November 5, 2025

A sprinkler supervisory switch, whether it’s a flow, tamper, or pressure switch, has specific electrical specs. Learn more about these numbers.

Read Now →

Carbon Monoxide & Smoke Detector Testers: How Long Do They Last?

August 14, 2025

Smoke and CO detector testers are essential for verifying that alarm systems function properly. But know the shelf life of smoke and CO cartridges!

Read Now →

Explosion-Proof Equipment in Fire Protection Systems

January 1, 2025

Read Now →

How to Protect Gauges from Overpressure and Damage

July 17, 2024

Pressure spikes can damage gauges. Prevent gauge overpressure damage by understanding ratings, employing best practices, & using snubbers.

Read Now →

What Happened to System Sensor? Introducing Safe Signal™

January 19, 2022

System Sensor fire sprinkler supervisory devices are now manufactured by Safe Signal. Learn why the name changed—but little else!

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What’s the Difference Between a Tamper Switch and a Supervisory Switch?

June 8, 2021

QRFS explains the difference between tamper switches and supervisory switches, plus other types of fire sprinkler system sensors.

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How Does a Water Motor Gong Work in Fire Sprinkler Systems?

September 1, 2020

Alarm gong systems deliver warning that sprinklers are operating—even if the power goes out. Learn exactly how they work.

Read Now →

Pitot Gauge Kits for Fire Hose Testing & Hydrant Flow Tests

May 27, 2020

Learn about the features of pitot gauge kits—including the gauges, blades, tubes & more—and how they make testing easier and more accurate.

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