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REMS Detect GS4 Professional Electronic Gas Leak Detector

Germany
REMS
Detect GS4

Pro Electronic Gas Leak Detector

German lightweight gas leak detector|Only 78 g|Quick-change sensors|For combustible gas / refrigerant / ammonia / high-purity hydrogen|Complies with EU F-Gas and EN 14624 high-sensitivity standards|One-touch manual zeroing|20 cm flexible extension probe included.

Product Features
  • Multi-Gas Detection: Interchangeable sensor heads allow detection of different gases with one main unit.
  • German High-Sensitivity Standard: Complies with EU F-Gas 2024/573 and EN 14624:2020 requirements.
  • Quick-Change Sensors: Sensor heads are available for combustible gas, refrigerant, ammonia, and high-purity hydrogen.
  • Multi-Level Alarm: Four-color LED visual alert and audible alarm make leak detection more intuitive.
  • One-Touch Manual Zeroing: Helps eliminate background concentration interference and pinpoint leak sources.
  • Automatic Warm-Up: Improves detection stability and jobsite efficiency.
  • 20 cm Flexible Extension Probe: Allows access to narrow, hidden, or hard-to-reach inspection points.
  • Optional Lighting Module: GS4-LED can be used as an inspection light for confined areas.
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#HVAC Tools

Model Specifications

SKU
Model
Description
Weight
Remarks
611095
Detect GS4 Set F
Main unit, 20 cm flexible extension probe, quick-change sensor, 2 × 1.5V AAA batteries, and original durable soft storage pouch.
78 g
Combustible gas version
611096
Detect GS4 Set R
Main unit, 20 cm flexible extension probe, quick-change sensor, 2 × 1.5V AAA batteries, and original durable soft storage pouch.0
78 g
Refrigerant version
611310
GS4-F
Combustible gas sensor
611312
GS4-R
Refrigerant sensor
611311
GS4-S
Ammonia sensor
611313
GS4-H
High-purity hydrogen sensor
611314
GS4-LED
LED lighting module
611213
20 cm flexible extension probe.

Original sensitivity test data is available upon request.

Product Details

REMS Detect GS4 gas and refrigerant leak detector
Product Overview
REMS Detect GS4|Gas and Refrigerant Leak Detector

REMS Detect GS4 is an ultra-light handheld leak detector for technical installations, gas piping, pressure vessels, refrigeration and air-conditioning equipment, cold storage systems and automotive cooling systems. The main unit weighs only 78 g. With a 200 mm flexible extension tube and quick-change sensors, it can reach narrow spaces, blind spots and inside equipment for on-site maintenance, inspection and leak detection work.

Specifications
Technical Data
Product Type
Handheld gas / refrigerant leak detector
Body Design
Ultra-light handheld design, 214 mm body length, only 78 g
Probe Configuration
200 mm flexible extension tube, tool-free installation and removal, bendable for hard-to-reach areas
Sensor System
Colour-coded quick-change sensors, can be inserted directly into the main unit or extension tube
Power Supply
1.5V AAA batteries × 2
Power Saving
10-minute automatic shut-off
The key to leak detection is not only whether the detector reacts, but whether it can reach the actual possible leak point

Gas and refrigerant leaks often occur at joints, valves, inside equipment or in areas that are difficult to see. The value of REMS Detect GS4 lies in its lightweight body, extendable probe and sensors that can be quickly changed according to gas type, helping users locate suspected leak points more efficiently without relying only on visual inspection or soap-water testing.

Applications
Applications

Suitable for leak detection in industrial pipelines, technical installations, gas piping, pressure vessels, cold storage systems, air-conditioning equipment and automotive cooling systems. Different sensors can be selected for combustible gases, refrigerants, ammonia and high-purity hydrogen.

Industrial Pipelines and Technical Installations

For gas piping, pressure vessels, equipment pipelines and industrial site safety inspections.

Refrigeration, Air-Conditioning and Cooling Systems

For refrigerant leak detection in cold storage systems, air-conditioning equipment and automotive cooling systems.

REMS Detect GS4 sensors and probe
Sensor Options
Sensor Options
GS4 uses colour-coded quick-change sensors. Different sensors support different gas detection needs. Select the suitable version according to the actual application.
GS4-F
Combustible Gas Sensor
Detection Type
Combustible gases
Supported Gases
Butane C4H10, methane CH4, propane C3H8, hydrogen H2
GS4-R
Refrigerant Sensor
Detection Type
Refrigerants
Supported Refrigerants
R-22, R-32, R-134a, R-152a, R-290, R-404a, R-407c, R-410a, R-507a, R-600a, R-1234yf, etc.
Regulation
Complies with EU F-Gas Regulation (EU) 2024/573
GS4-S
Ammonia Sensor
Detection Type
Ammonia
Supported Gas
NH3
GS4-H
High-Purity Hydrogen Sensor
Detection Type
High-purity hydrogen
Supported Gas
H2
Feature
Designed to exclude interference from other combustible gases
Features
Product Features
Built around an ultra-light body, flexible extension tube, quick-change sensors and multi-gas support, it is suitable for service technicians, refrigeration and air-conditioning work, industrial equipment inspections and gas piping leak detection.
78 g Ultra-Light Handheld Design

The lightweight body reduces fatigue during long inspections or work in high, narrow or hard-to-reach areas.

200 mm Flexible Extension Tube

Bends into blind spots and is suitable for leak detection inside equipment, behind pipelines and in narrow spaces.

Quick-Change Sensors

Sensors can be changed according to gas type and inserted directly into the main unit or the extension tube.

Intuitive Colour Coding

Colour-coded sensor identification helps reduce the risk of selecting the wrong sensor on site.

Automatic Shut-Off

10-minute automatic shut-off helps extend battery life.

Multi-Application Leak Detection

Supports detection tasks for combustible gases, refrigerants, ammonia and high-purity hydrogen.

Product Video
Product Video