1. Product Overview
The BN-LINK 24-Hour Plug-in Mechanical Timer is designed to automate the operation of various indoor electrical devices. It features a simple mechanical dial with 15-minute intervals, allowing for precise scheduling of ON/OFF cycles over a 24-hour period. This heavy-duty timer is ETL listed, ensuring safety and reliability for a wide range of applications.

Image 1: BN-LINK 24-Hour Plug-in Mechanical Timer, front view.
2. Product Features
- Programmable Schedule: Offers 96 ON/OFF settings within 24 hours, with each push pin representing a 15-minute interval.
- Visual Indicator: A red signal light clearly indicates when the device is powered.
- Simple Operation: Pins UP means the timer is OFF, and pins DOWN means ON.
- Mode Selection: Features a slide switch to select between 'ON' (continuous power) and 'TIMER' (scheduled operation) modes.
- Versatile Compatibility: The three-hole grounded outlet is compatible with both two-prong and three-prong plugs.
- Heavy-Duty Design: Suitable for automating lamps, Christmas lights, fans, humidifiers, coffee machines, aquariums, grow lights, and other indoor electrical devices.
- Safety Certified: ETL approved for safety.
3. Safety Information
This BN-LINK heavy-duty grounded timer is ETL approved, ensuring it meets recognized safety standards. It is rated for 125VAC, 60Hz, with a maximum load of 1875W, 15A Resistive, 8A Tungsten, and 1/2 HP, TV-5. Always ensure that the total wattage of connected devices does not exceed the timer's maximum load capacity to prevent overheating and potential hazards. Use only with grounded outlets.
4. Setup
- Reset Pins: Before setting up, ensure all the black push pins around the dial are in the UP position. This sets the timer to an 'OFF' state for all intervals initially.
- Set Current Time: Rotate the entire black dial clockwise until the arrow on the timer aligns with the current time. The dial is marked with AM/PM hours.
- Program ON/OFF Times: Push down the black pins corresponding to the desired ON periods. Each pin represents 15 minutes. For example, to turn a device ON from 6 PM to 10 PM, push down all pins between the 6 PM and 10 PM marks. Pins in the UP position indicate OFF periods.
- Select Operating Mode: Use the red slide switch on the side of the timer. Slide it to the 'TIMER' position (indicated by a clock icon) for automatic scheduled operation. If you wish to bypass the timer and keep the connected device continuously ON, slide the switch to the 'ON' position.
- Plug In: Plug the timer into a standard 3-prong wall outlet. Then, plug your device into the timer's grounded outlet.

Image 2: Visual guide for setting ON/OFF pins and current time.
Video 1: Official BN-LINK guide on how to use the 24-hour plug-in mechanical timer, demonstrating pin setting and mode selection.
5. Operating Instructions
Once the timer is plugged in and the current time is set, the dial will continuously rotate clockwise. When the rotating dial reaches a segment where pins are pushed DOWN (ON position), the connected device will receive power. When it reaches a segment where pins are UP (OFF position), power to the device will be cut off. The red indicator light on the timer will illuminate when power is being supplied to the connected device.

Image 3: Diagram illustrating the various components of the timer, including the clock dial, push pins, and slide switch.

Image 4: Overview of the timer's scheduling capabilities: 1 grounded outlet, 15-minute intervals, 24-hour programmable, 96 ON/OFF settings.
6. Maintenance
To ensure optimal performance and longevity of your BN-LINK Mechanical Timer, follow these simple maintenance guidelines:
- Cleaning: Disconnect the timer from the power outlet before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the timer in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspection: Periodically inspect the timer and its plug for any signs of damage, such as frayed wires or cracked casing. If damage is found, discontinue use immediately and replace the unit.
7. Troubleshooting
If your BN-LINK Mechanical Timer is not functioning as expected, consider the following:
- Device Not Turning ON/OFF:
- Ensure the timer is securely plugged into a working wall outlet.
- Verify that the connected appliance is properly plugged into the timer and is functional.
- Check the red slide switch on the side of the timer. It must be in the 'TIMER' position for scheduled operation. If it's in 'ON', the device will be continuously powered.
- Confirm that the black push pins are correctly set for the desired ON/OFF periods. Pins pushed DOWN correspond to ON times.
- Ensure the current time on the dial is accurately aligned with the arrow.
- Timer Not Advancing: Ensure the timer is plugged into a live outlet. The internal clock mechanism requires power to operate.
- Overheating: If the timer feels hot, immediately unplug it and the connected device. Ensure the total wattage of connected devices does not exceed the timer's maximum load capacity (1875W).
8. Specifications
| Specification | Detail |
|---|---|
| Model Number | CP-U4NA-1P |
| Rated Voltage | 125VAC, 60Hz |
| Max Load | 1875W |
| Resistive | 15A |
| Tungsten | 8A |
| Motor | 1/2 HP |
| TV Rating | TV-5 |
| Product Dimensions | 1.3"D x 2.9"W x 3.3"H |
| Item Weight | 4.5 Ounces |
| Material | Plastic |
| Certifications | ETL Listed |

Image 5: Detailed electrical ratings and physical dimensions of the timer.
9. What's in the Box
- 1 x BN-LINK 24-Hour Plug-in Mechanical Timer
10. Warranty and Support
For warranty information or technical support regarding your BN-LINK 24-Hour Plug-in Mechanical Timer, please refer to the product packaging or contact BN-LINK customer service directly. Contact details can typically be found on the manufacturer's official website or on the product's retail page.





