USB to RJ11 DC5521 Radar Detector Power Cable 1.5M
USB to RJ11 DC5521 Radar Detector Power Cable 1.5M
USB to RJ11 / DC5521 Radar Detector Power Cable
Keep your radar detector powered up and ready on every drive. This USB to RJ11 / DC55×21 power cable converts a standard 5V USB car charger output to the 12V your radar detector needs — no bulky adapters, no messy wiring. Simply plug into any car USB port and go.
Key Features
- Smart Voltage Conversion: Built-in chip technology steps up 5V USB input to the 12V output required by most radar detectors, delivering stable, consistent power every time.
- Dual Connector Options: Comes with both RJ11 and DC55×21 (5.5mm × 2.1mm) output plugs, covering the widest range of radar detector models.
- Broad Compatibility: Designed to work with most major radar detector brands. Please verify your detector's power connector type before purchasing.
- Durable Build: Constructed from 3.5mm pure copper wire for efficient power transfer, encased in a flexible soft-PVC shell that bends freely without kinking or cracking.
- Chip Encryption Technology: Protects against voltage fluctuations and reduces current consumption, keeping your detector running at optimal performance.
- Generous 1.5M Length: Plenty of cable length to route neatly from your USB car charger to your dashboard-mounted detector without strain.
- Wide Operating Range: Rated for –20°C to 80°C, making it reliable in all seasonal driving conditions.
Specifications
| Input Voltage | 5–12V DC (USB) |
| Output Voltage | 12V DC |
| Output Connectors | RJ11 / DC55×21 (5.5mm × 2.1mm) |
| Cable Length | 1.5 metres |
| Materials | Copper + ABS + Soft PVC |
| Working Temperature | –20°C to 80°C |
What's in the Box
- 1 × USB to RJ11 / DC55×21 Radar Detector Power Cable
Made in Mainland China.
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Learn more: FuelEconomy.gov driving efficiency guidance
Frequently Asked Questions
Q: Will this USB to RJ11 radar detector power cable work with my car's USB port?
A: Yes — the cable is designed to plug into any standard car USB port (5V output). The built-in chip converts the 5V USB input up to the 12V DC output required to run most radar detectors. Just ensure your detector uses an RJ11 or DC55×21 (5.5mm × 2.1mm) connector.
Q: How do I know if my radar detector is compatible with this cable?
A: Check the power port on your radar detector. If it uses an RJ11 (telephone-style) or a DC barrel connector measuring 5.5mm outer diameter × 2.1mm inner pin (DC55×21), this cable is compatible. We recommend verifying your detector's connector type and voltage requirements before purchasing.
Q: Is the 1.5M cable length enough to reach from a USB port to a windshield mount?
A: In most vehicles, the 1.5-metre (approximately 5 feet) cable is more than sufficient to route from a dashboard or centre-console USB port up to a windshield-mounted radar detector, with enough slack for a neat, tidy installation.
Q: Is this cable safe to leave plugged in while driving?
A: Yes. The chip encryption technology manages voltage conversion and monitors current consumption to maintain stable output. The cable is also rated for operating temperatures between –20°C and 80°C, making it safe for year-round in-car use.