M12 and M8 connectors are robust, waterproof, and industrial-grade plug connections often used in LED lighting, sensors, and automation systems . They are resistant to moisture, dust, and vibration and are ideal for outdoor and industrial applications .
1. Differences between M12 and M8 connectors
| Feature | M12 connector | M8 connector |
|---|---|---|
| Thread diameter | 12 mm | 8 mm |
| Number of pins | 2-8 pins (sometimes more) | 2-6 pins |
| Water resistance | IP67/IP68 (depending on type) | IP67 |
| Current strength | Up to 4-16A (depending on variant) | Usually < 4A |
| Usual tension | 12V, 24V, 48V, sometimes 230V | 5V, 12V, 24V |
| Applications | LED industrial lighting, automation, industrial equipment | LED strips, small lighting modules, sensors |
💡 M12 connectors are more commonly used for heavier industrial applications , while M8 connectors are suitable for compact and lighter applications , such as LED strips and signal transmission.
2. Applications of M12 and M8 connectors in LED lighting
🔌 M12 connectors (12mm screw connection)
✅ Industrial LED lighting → Suitable for heavy LED luminaires in factories and warehouses.
✅ Outdoor lighting → IP68 variants are suitable for humid environments.
✅ Smart LED lighting with data connection → Suitable for DALI and DMX control .
✅ LED lighting in vehicles → Widely used in agricultural and construction machinery.
🔌 M8 connectors (8mm screw connection)
✅ Compact LED strips and spotlights → Connections between small LED modules.
✅ Smart lighting and sensors → Used in home automation and smart home lighting.
✅ Medical applications → LED lighting in laboratories and hospitals.
3. Different types of M12 and M8 connectors
M12 and M8 connectors are available in various codings and pin configurations depending on their application.
M12 codings
🔹 A-coded → LED lighting, sensors and low-voltage power supplies ( 12V-24V ).
🔹 B-coded → Industrial communication (Profibus, field buses).
🔹 D-coded → Ethernet connections for smart lighting systems.
🔹 X-coded → High speed data transfer, e.g. DMX lighting.
M8 configurations
🔹 2- or 3-pin → Power connections for small LED modules.
🔹 4- or 6-pin → LED lighting with signal and dimming functions.
4. Why choose M12 or M8 connectors in LED lighting?
✔ Waterproof and dustproof (IP67/IP68) → Ideal for outdoor lighting and industrial applications.
✔ Strong screw connection → Resistant to vibrations and mechanical stress.
✔ Modular design → Easily expand and connect LED systems.
✔ Wide applicability → Suitable for both power and signal transmission (DMX, DALI, etc.).
5. Which connector suits your LED application?
| Application | Recommended connector |
|---|---|
| Industrial LED lighting | M12, A-coded, 4-pin or 5-pin |
| LED control (DMX/DALI) | M12, X-coded, 8-pin |
| Outdoor lighting / waterproof LED system | M12 or M8, IP68 |
| Small LED strips and modular LED systems | M8, 2- or 4-pin |