REMS Detect GS4 Professional Electronic Gas Leak Detector
- 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.
Model Specifications
Product Details

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.
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.
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.
For gas piping, pressure vessels, equipment pipelines and industrial site safety inspections.
For refrigerant leak detection in cold storage systems, air-conditioning equipment and automotive cooling systems.

The lightweight body reduces fatigue during long inspections or work in high, narrow or hard-to-reach areas.
Bends into blind spots and is suitable for leak detection inside equipment, behind pipelines and in narrow spaces.
Sensors can be changed according to gas type and inserted directly into the main unit or the extension tube.
Colour-coded sensor identification helps reduce the risk of selecting the wrong sensor on site.
10-minute automatic shut-off helps extend battery life.
Supports detection tasks for combustible gases, refrigerants, ammonia and high-purity hydrogen.










