2.1 mm × 5.5 mm Inline Power Switch — Quick On/Off for 12 V DC LED Strips
Give your low-voltage lighting a simple, dependable on/off control with this compact inline rocker switch featuring standard 2.1 mm × 5.5 mm DC barrel connectors (female input to male output). It’s a perfect match for 12 V LED strips, mini downlights and other DC accessories up to 24 W (2 A max). Just plug the female end into your DC power source and the male end into the light — no tools, no wiring, no fuss.
For a complete setup, pair this switch with a suitable constant-voltage driver from our LED drivers & power supplies range.
Key benefits
- Plug-and-play 2.1 mm barrel connectors — no soldering required.
- Ideal for 12 V DC LED strips (e.g., up to ~10 m of 3528 60 LED/m standard strip).
- Compact rocker body for a tidy install on desks, shelves or under cabinets.
- Two colours (Black or White) to match your cable run and décor.
- Wide DC range 3–48 V (observe the 2 A / 24 W limit).
What it’s great for
- Quick on/off control for single-colour LED strip runs
- Display shelving, under-cabinet task lighting, hobby benches
- Any constant-voltage DC accessory using a 2.1 mm barrel plug
Good to know
- Use with a regulated DC driver of matching voltage; allow ~20% headroom on driver wattage.
- For longer or higher-power runs, consider multiple switches or higher-gauge cabling to minimise voltage drop.
- Indoor use only (IP20). Keep away from moisture and heat sources.
2.1 mm × 5.5 mm inline power switch — specification
| Type: | DC inline rocker switch (barrel connector) |
| Connector size: | Ø 5.5 mm outer × Ø 2.1 mm inner (female IN → male OUT) |
| Colours: | Black, White |
| Supply voltage: | DC 3–48 V (constant voltage) |
| Max load: | 24 W (up to 2 A at 12 V) |
| Suitability (example): | Up to ~10 m of standard 12 V 3528 60 LED/m strip* |
| Switch body size: | ≈ 60 mm (L) × 19 mm (W) × 20 mm (H) |
| Tail lengths: | ≈ 110 mm (female input), ≈ 130 mm (male output) |
| Total length: | ≈ 295 mm |
| Channels: | 1 (on/off) |
| Operating temp.: | −20 °C to +60 °C |
| Storage temp.: | −20 °C to +60 °C |
| Ingress protection: | IP20 (indoor) |
| Certifications: | CE, PSE JET, CEC, ENEC |
| Net weight: | ≈ 22 g |
| Warranty: | 2 years |
*Guide only — actual length depends on strip wattage per metre and voltage drop. For longer runs, inject power at intervals or use heavier-gauge cable.
How to connect
- Plug the female 2.1 mm end of the switch into your DC power supply output.
- Plug the male 2.1 mm end into the LED strip/controller input (matching polarity).
- Toggle the rocker to switch the circuit ON/OFF.
Need a power source? Browse our Drivers & Power Supplies and pair with your chosen LED strip.
