REMS Pro-Electronic-Gas-Leak-Detector-Detect-GS4
- 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 facilities, gas pipelines, pressure vessels, refrigeration and air-conditioning equipment, cold storage systems, and automotive cooling systems. The main unit weighs only 78 g and can be used with a 200 mm flexible extension probe and quick-change sensors to reach narrow spaces, dead corners, and internal equipment areas for efficient leak detection.
Gas and refrigerant leaks often occur around joints, valves, inside equipment, or in areas that are difficult to see. REMS Detect GS4 combines a lightweight main unit, extendable probe, and gas-specific quick-change sensors, helping technicians identify suspected leak points more efficiently instead of relying only on visual checks or soap water testing.
Suitable for leak detection in industrial pipelines, technical facilities, gas lines, pressure vessels, cold storage systems, air-conditioning equipment, and automotive cooling systems. Different sensors support combustible gas, refrigerant, ammonia, and high-purity hydrogen detection needs.
Suitable for gas pipelines, pressure vessels, equipment piping, and industrial safety inspections.
Can be used for refrigerant leak detection in cold storage systems, air-conditioning equipment, and automotive cooling systems.

The lightweight main unit reduces fatigue during long inspections, overhead work, or confined-space operation.
Bends into dead corners and reaches behind equipment, inside units, and around pipework.
Sensor modules can be changed according to gas type and attached directly to the main unit or extension tube.
Color coding helps reduce the risk of selecting the wrong sensor in the field.
The 10-minute automatic shut-off function helps extend battery life.
Supports combustible gas, refrigerant, ammonia, and high-purity hydrogen detection tasks.










