1. Introduction
Thank you for choosing the EMITEVER 24V Power Supply. This adapter is designed to provide a stable 24V DC constant voltage output, making it ideal for various low-voltage applications such as LED strip lights, modules, light bars, and other compatible 24V devices requiring up to 30 watts of power. Its UL-Listed certification ensures safety and reliability. Please read this manual thoroughly before installation and use to ensure proper operation and longevity of the product.
2. Safety Information
To prevent electric shock, fire, or injury, please observe the following safety precautions:
- Ensure the device you are powering operates at 24V and requires under 30W. Using with incompatible devices may lead to malfunction, flickering, or overheating.
- This power supply is designed for dry indoor environments (IP30 Rating). Do not expose it to water, moisture, or high humidity.
- Do not open or modify the power supply. There are no user-serviceable parts inside.
- Keep out of reach of children.
- Unplug the power supply from the outlet before making any connections or disconnections.
- Ensure proper ventilation around the power supply during operation.
The EMITEVER 24V Power Adapter is equipped with cUL Listed certification and comprehensive protection mechanisms, including overcurrent, short circuit, overvoltage, and overheat defenses, to guarantee device safety and longevity.
Figure 2.1: Built-in Safety Protections
This image displays the internal components of the power adapter and highlights its multiple safety features: overvoltage protection, overcurrent protection, short circuit protection, and overheat protection. These mechanisms are designed to safeguard both the power supply and the connected devices.
Figure 2.2: UL Certification and Component Quality
This image presents a comparison between EMITEVER's power supply and another brand, emphasizing EMITEVER's adherence to UL certification standards and the use of higher quality components such as large input electrolytic capacitors, large heat sinks, triple insulated wire transformers, fire-resistant silicone, and pure copper wire power cables, contributing to enhanced safety and durability.
3. Product Features
- Input: 100-240V AC, 50/60Hz.
- Output: 24V DC constant voltage, 30 watts, 1.25A maximum.
- Safety Certifications: UL-Listed, cUL Listed.
- Protection Mechanisms: Overcurrent, short circuit, overvoltage, and overheat defenses.
- Compatibility: Ideal for 24V LED lighting (strips, modules, light bars, cabinet lights, landscape lighting) and other 24V devices under 30 watts (e.g., wireless routers, small 3D printers, security cameras).
- Ease of Use: Easy plug-and-play design, no hardwiring or soldering required.
- Output Connector: Standard 5.5 x 2.1mm DC jack (positive tip).
- Start-up Time: Can take 1-3 seconds to stabilize output and extend product life.
4. Specifications
| Specification | Value |
|---|---|
| Model Number | EM-ZF120A-2401250 |
| Input Voltage | 100-240V AC |
| Input Frequency | 50/60 Hz |
| Output Voltage | 24V DC |
| Output Power | 30 Watts (Max) |
| Output Current | 1.25 Amps (Max) |
| DC Jack Size | 5.5 x 2.1mm (Inner Positive) |
| IP Rating | IP30 (Indoor Use Only) |
| Power Source | Corded Electric |
| Mounting Type | Wall Mount |
| Package Dimensions | 4.25 x 2.52 x 2.05 inches |
| Item Weight | 5.61 ounces |
Figure 4.1: Product Dimensions and Electrical Specifications
This image illustrates the physical dimensions of the power supply (approximately 3 inches in length, 1.8 inches in width, and 1.2 inches in height) and confirms its electrical specifications: 100-240V AC 50/60Hz input and DC 24V/30W 1.25A Max output. The cable length is approximately 48 inches.
5. Package Contents
The package includes:
- 1 x EMITEVER 30W DC Power Supply
Figure 5.1: EMITEVER 24V 30W Power Supply
This image shows the main product, the EMITEVER 24V 30W power supply, along with its detachable DC connector. The power supply features a standard US plug and a coiled output cable ending in a DC barrel jack, with an additional screw terminal adapter for flexible connections.
6. Setup and Connection
The EMITEVER 24V Power Supply is designed for easy plug-and-play installation. No hardwiring or soldering is typically needed for standard applications.
6.1. Connection Methods
The power supply includes an output cable with a standard 5.5 x 2.1mm DC jack (positive tip). For devices that do not have a compatible DC jack, a screw terminal adapter is provided for direct wire connections.
Figure 6.1: Two Connection Methods
This image illustrates two primary ways to connect the power supply to your device. The top method shows a direct connection using the 5.5 x 2.1mm DC barrel jack to a compatible female port on an LED strip. The bottom method demonstrates using the included screw terminal adapter to connect bare wires from an LED strip directly to the power supply's output.
- Direct DC Jack Connection: If your LED strip or device has a compatible 5.5 x 2.1mm DC input jack, simply plug the power supply's output connector directly into it.
- Screw Terminal Connection: For devices with bare wire inputs (e.g., some LED strips or modules), use the provided screw terminal adapter. Connect the positive (+) and negative (-) wires from your device to the corresponding terminals on the adapter, then plug the adapter into the power supply's DC jack.
6.2. DC Output Size Verification
Ensure your device's DC input matches the 5.5 x 2.1mm size of this power supply's output jack. The inner positive (+) polarity is standard.
Figure 6.2: DC Output Size and Polarity
This image provides a detailed view of the 5.5mm outer diameter and 2.1mm inner diameter of the DC output jack. It also clearly indicates that the inner tip is positive (+) and the outer barrel is negative (-). A visual guide of various DC plug sizes is included, highlighting that only the 5.5mm x 2.1mm size is compatible with this power supply.
6.3. Powering On
Once connections are secure, plug the power supply into a standard 100-240V AC wall outlet. The connected device should power on. Note that the power supply may take 1-3 seconds to stabilize its output upon initial connection.
7. Operation
This EMITEVER power supply provides a constant 24V DC output. It does not have built-in charging or dimming functions. For dimming LED strip lights, an external PWM (Pulse Width Modulation) controller should be used at the DC end of the circuit, between the power supply and the LED lights.
8. Maintenance
To ensure optimal performance and longevity of your power supply:
- Keep the power supply clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid placing the power supply in areas with excessive heat, direct sunlight, or high humidity.
- Do not block the ventilation openings (if any) on the power supply.
- Regularly check the cables and connectors for any signs of damage. If damage is found, discontinue use and replace the unit.
9. Troubleshooting
If you encounter issues with your EMITEVER 24V Power Supply, refer to the following common problems and solutions:
- Device Not Lighting Up:
- Ensure the power supply is securely plugged into a working wall outlet.
- Verify that your device operates at 24V and its power requirement is under 30W. Overloading the power supply will prevent it from functioning correctly.
- Check all connections between the power supply and your device, ensuring they are firm and correctly polarized (positive to positive, negative to negative).
- Test the power supply with another compatible 24V device if possible, to isolate the issue.
- Flickering Lights:
- This often indicates that the connected device is drawing more power than the 30W capacity of the power supply. Reduce the load or use a higher wattage power supply.
- Ensure stable input voltage from the wall outlet.
- Check for loose connections.
- Power Supply Overheating:
- Overheating is typically caused by exceeding the 30W maximum load. Disconnect the device and verify its power requirements.
- Ensure adequate ventilation around the power supply. Do not cover it or place it in an enclosed space.
- If overheating persists with appropriate load and ventilation, discontinue use and contact support.
- No Dimming Function:
- This power supply does not have built-in dimming. An external PWM controller is required for dimming functionality.
10. Warranty and Support
EMITEVER provides a 3-year worry-free service for this 24V Power Adapter, covering manufacturing defects and ensuring product longevity. For technical support, warranty claims, or any questions not addressed in this manual, please contact EMITEVER customer service through the retailer's platform or the official EMITEVER website. Please have your product model number (EM-ZF120A-2401250) and purchase information ready when contacting support.
