An introduction to the product and its key features
SFX Cables SFX/OSP4-LSZH-GRY-100is a professional 4-pair screened instrument and control cable supplied on a 100 m reel. Designed as an equivalent to the well-known Belden 9504, this compact multipair cable addresses the needs of installations requiring reliable low-voltage signalling, robust screening against electromagnetic interference, and safety-conscious materials for public and building interiors. Its core attributes include 4 twisted pairs of tinned stranded copper conductors (24 AWG / ~0.20 mm2), LSZH (Low Smoke Zero Halogen) insulation and jacket, an overall aluminium-polyester foil shield with tinned copper drain wire, and a compact overall diameter of approximately 6.8 mm.
- 4 pairs (8 conductors) suitable for RS-232, control, instrumentation and line-level audio.
- 24 AWG tinned stranded copper conductors for flexibility and corrosion resistance.
- Overall aluminium/mylar (AI-PET) foil screen with tinned copper drain for effective EMI protection.
- LSZH insulation and jacket — low smoke, zero halogen for safety in enclosed spaces.
- Rated voltage 600 V and a wide operating temperature range (−40 °C to +70 °C).
- Compact form factor and 100 m reel for convenient storage and deployment.
A detailed description of the product's specifications and benefits
The construction and specification of theSFX/OSP4-LSZH-GRY-100reflect a balance between electrical performance, mechanical robustness, and regulatory compliance. Each conductor is made from tinned stranded copper (24 AWG), which improves flexibility for routing in panels and conduits while also offering enhanced corrosion resistance compared with bare copper — an advantage in mixed-environment installations.
- Conductor:Tinned stranded copper, 24 AWG (≈0.20 mm²).
- Pairs/cores:4 pairs (8 cores) for multiple signal lines or paired differential signalling.
- Insulation:LSZH around each conductor with approx. 0.28 mm insulation thickness.
- Shielding:Overall aluminium-polyester (AI-PET) foil with a tinned copper drain wire for straightforward grounding and consistent EMI/RFI protection.
- Jacket:Outer LSZH jacket in grey (RAL 7042), jacket thickness 0.70 mm, compact overall diameter 6.80 ±0.20 mm.
- Electrical:Rated voltage 600 V; insulation resistance >200 MΩ/km @ 20 °C; max DC resistance <79 Ω/km @ 20 °C.
- Environmental:Operating temperature −40 °C to +70 °C; supplied on a 100 m reel for practical onsite use.
- Standards & compliance:CE, RoHS2 and LVD listed; CPR classification Eca.
- Reliable signal integrity:The twisted-pair format and overall foil shield reduce crosstalk between pairs and provide effective protection from external electromagnetic interference — important for RS-232, instrumentation and sensitive audio lines.
- Safety in occupied spaces:LSZH materials drastically reduce the release of toxic and corrosive gases in the event of fire, making the cable suitable for public buildings, transport hubs, retail spaces and other locations where occupant safety is a priority.
- Installation flexibility:24 AWG tinned stranded conductors strike a balance between current-carrying capacity and flexibility, easing routing in densely populated control cabinets and conduits.
- Durability and longevity:Tinned conductors and a robust jacket help resist environmental degradation, making the cable suitable for long-term fixed installations.
- Compact footprint:A small overall diameter allows more pairs to be routed through constrained spaces, saving conduit and tray space compared with bulkier multipair alternatives.
Use cases and scenarios where the product excels
TheSFX/OSP4-LSZH-GRY-100is well suited to a wide range of commercial, industrial and AV applications. Its combination of screening, LSZH construction and compact size make it particularly effective in the following scenarios:
Use the cable for interconnections inside control cabinets, PLC wiring, sensor and actuator lines, and instrumentation racks. The screened construction preserves signal fidelity in electrically noisy environments commonly found near motors, drives and industrial switching equipment.
POS systems and cashier terminals often coexist with other electronic equipment and must meet safety regulations for public spaces. LSZH jacket and a compact profile make this cable a strong choice for connecting peripherals, data terminals and RS-232 devices without compromising fire-safety criteria.
Many legacy and industrial devices continue to use RS-232, RS-422 and similar serial protocols. The 4-pair configuration provides flexibility for dedicated serial pairs, power plus signal pairs in specific layouts, or multiple simultaneous serial channels.
For line-level audio and low-voltage control in live venues, conference facilities, and broadcasting environments, the screening limits hum and interference, while the LSZH jacket meets venue safety requirements.
Comparisons with similar products in the market
When choosing a multipair instrument cable, purchasers typically weigh shielding type, jacket material, conductor size, and flexibility. Here is how the SFX 4-pair LSZH cable compares with common alternatives:
- VS unshielded multipair (UTP) cables:UTP multipair cables are often cheaper and more flexible but offer little to no protection against EMI. In electrically noisy environments the screened SFX cable delivers superior signal integrity and reduced troubleshooting time.
- VS PVC-jacketed screened cables:PVC jackets are common and economical, but they emit more smoke and halogenated gases when burned. For installations in public indoor spaces or transport infrastructure where occupant safety and reduced toxic emissions are required, LSZH is the safer choice.
- VS individually shielded pairs:Some multipair cables include individually shielded pairs plus an overall shield; those provide the highest per-pair isolation but are bulkier and more expensive. The SFX 4-pair overall foil shield represents an effective middle ground — good EMI protection with a compact diameter and lower cost than individually shielded constructions.
- VS larger gauge conductors:Larger gauges (22 AWG or 20 AWG) reduce DC resistance and increase current capacity but increase stiffness and diameter. The 24 AWG in the SFX cable is widely accepted for signalling, control and audio where flexibility and tray space matter more than carrying significant power.
- Brand equivalency:The cable is described as a Belden 9504 equivalent — meaning it matches a widely recognized specification for screened multipair LSZH-type instrument cable, providing confidence to users comparing vendor offerings.
Customer testimonials or reviews
There are no official public user reviews attached to this product listing. However, installers and system integrators commonly report the following representative feedback when working with similar screened LSZH multipair cables:
- "Excellent balance of flexibility and screening — easy to route in a crowded control cabinet and reduced noise on serial links."
- "LSZH jacket was a deciding factor for an installation in a university building where fire regulations were strict."
- "The tinned drain makes termination straightforward and gives reliable grounding for the shield."
- "Compact diameter saved conduit space compared with the older multi-shielded cables we used to buy."
These examples reflect common installer priorities — screening effectiveness, LSZH safety, ease of termination and compact routing — and they align with the SFX cables design goals.
Conclusion: why this product is a great choice
TheSFX/OSP4-LSZH-GRY-100 4-Pair Screened LSZH Instrument Cableis a practical, safety-conscious and performance-oriented solution for modern low-voltage signalling and instrument wiring. It combines the EMI protection of an overall foil shield with the reduced-torque, corrosion-resistant benefits of tinned stranded conductors and the life-safety advantages of LSZH construction. Supplied on a 100 m reel and sized to save tray and conduit space, it is an excellent fit for control cabinets, AV installations, POS systems, RS-232 links and other use cases where reliable signal integrity and occupant safety are priorities.
For purchasers comparing options, the cable offers an effective middle ground between cost, performance and safety: better screening and fire-safety credentials than basic PVC unshielded cables, and a more compact, cost-effective footprint than multi-layer individually shielded alternatives. If your project requires compliant LSZH jacketing, straightforward shield termination, and versatile 4-pair wiring in a compact form, the SFX/OSP4-LSZH-GRY-100 deserves strong consideration.
For exact installation guidance, electrical limits and termination recommendations consult the manufacturers datasheet and adhere to local wiring regulations or an appropriately qualified electrician. Suggested retail pricing for reference is approximately 1,078.57 for the 100 m reel, with trade and volume pricing available from authorised distributors.
