1. పరిచయం
This manual provides essential information for the proper use and maintenance of your KERUI 3m Long 5.5x2.1mm DC Cable Extender. Please read these instructions carefully before use to ensure optimal performance and safety. This cable is designed to extend the reach of DC power connections for various devices, including CCTV security cameras and standalone sirens.
2. భద్రతా సమాచారం
- Ensure the power source is disconnected before connecting or disconnecting the cable.
- Do not exceed the specified power capability of 5A (approximately 50W at 12V).
- Avoid bending or kinking the cable sharply, as this may damage the internal conductors.
- Keep the cable away from water, excessive heat, and direct sunlight.
- Do not attempt to modify or repair the cable. Contact qualified personnel if damage occurs.
3. ఉత్పత్తి ముగిసిందిview
The KERUI DC Cable Extender is a 3-meter (9.84 feet) long cable designed to extend the reach of DC power connections. It features a male plug on one end and a female jack on the other, both with standard 5.5mm outer diameter and 2.1mm inner diameter specifications.

చిత్రం 3.1: సాధారణం view of the KERUI 3m DC Cable Extender. The cable is black, coiled, and features a male plug on one end and a female jack on the other.
3.1. Male Plug
The male plug connects to the power input of your device or another female jack for extension. It has an outer diameter of 5.5mm and an inner diameter of 2.1mm.

Figure 3.2: Close-up of the male DC power plug, indicating an outer diameter of 5.5mm and an inner diameter of 2.1mm.
3.2. Female Jack
The female jack connects to a power adapter's male plug or another male plug for further extension. It also features an outer diameter of 5.5mm and an inner diameter of 2.1mm.

Figure 3.3: Close-up of the female DC power jack, indicating an outer diameter of 5.5mm and an inner diameter of 2.1mm.
4. స్పెసిఫికేషన్లు
| కేబుల్ రకం | పొడిగింపు కేబుల్ |
| కనెక్టర్ రకం | 5.5x2.1mm DC Male to Female |
| బయటి వ్యాసం | 5.5మి.మీ |
| లోపలి వ్యాసం | 2.1మి.మీ |
| కేబుల్ పొడవు | 3 మీటర్లు (9.84 అడుగులు) |
| వాల్యూమ్tagఇ అనుకూలత | 0-36 వి డిసి |
| ప్రస్తుత సామర్థ్యం | 5A వరకు |
| కండక్టర్ మెటీరియల్ | టిన్డ్ రాగి |
| ఇన్సులేషన్ మెటీరియల్ | PVC |
| రంగు | నలుపు |
| అనుకూలత | KERUI Standalone Siren Alarm System and its power adapter, CCTV Equipment, Car DC power supply. |
5. సెటప్ మరియు ఇన్స్టాలేషన్
The KERUI DC Cable Extender is designed for simple plug-and-play installation.
- కనెక్టర్లను గుర్తించండి: Locate the male plug on your power adapter or device and the female jack on the device requiring power.
- Connect the Extender:
- Insert the male plug of your power adapter into the female jack of the KERUI extender cable.
- Insert the male plug of the KERUI extender cable into the female power input jack of your device (e.g., CCTV camera, siren).
- సురక్షిత కనెక్షన్లు: Ensure all connections are firm and fully seated to prevent power interruptions.
5.1. Cascading Multiple Cables
For applications requiring longer distances, two or more 3m KERUI extension cables can be cascaded (connected end-to-end) to achieve lengths of 6m or more. Ensure that the total current draw does not exceed the cable's 5A capability.

Figure 5.1: Illustration of two KERUI DC extension cables connected in series to achieve a longer reach. The yellow circle highlights the connection point between the two cables.
5.2. Compatibility Example
This cable is compatible with devices that use a 5.5x2.1mm DC power input, such as the KERUI Standalone Siren Alarm System and its corresponding power adapter.

చిత్రం 5.2: ఉదాample setup showing the KERUI DC Cable Extender connecting a power adapter to a KERUI Standalone Siren Alarm System. The power adapter and siren are not included with the cable.
6. ఆపరేషన్
Once the KERUI DC Cable Extender is properly connected between your power adapter and device, simply power on your device as usual. The cable acts as a passive extension and does not require any additional operational steps.
7. నిర్వహణ
- శుభ్రపరచడం: Wipe the cable with a dry, soft cloth if it becomes dusty. Do not use liquid cleaners.
- నిల్వ: When not in use, coil the cable loosely and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- తనిఖీ: Periodically inspect the cable and connectors for any signs of wear, cuts, or damage. Discontinue use if damage is observed.
8. ట్రబుల్షూటింగ్
8.1. No Power to Device
- కనెక్షన్లను తనిఖీ చేయండి: Ensure both ends of the extension cable are securely connected to the power adapter and the device.
- పవర్ అడాప్టర్ను ధృవీకరించండి: Confirm that the original power adapter is functioning correctly by testing it directly with the device (if possible).
- పరికరాన్ని తనిఖీ చేయండి: Ensure the device itself is operational.
- కేబుల్ని తనిఖీ చేయండి: Look for any visible damage to the cable (cuts, kinks, exposed wires). If damaged, replace the cable.
- ప్రస్తుత డ్రా: If using multiple cascaded cables or a high-power device, ensure the total current draw does not exceed the cable's 5A rating.
9. వారంటీ మరియు మద్దతు
For warranty information or technical support regarding your KERUI 3m Long 5.5x2.1mm DC Cable Extender, please refer to the product packaging or contact KERUI customer service through their official channels. Keep your purchase receipt for warranty claims.





