24H Digital Countdown Timer USB Switch – Adjustable Auto Off

24H Digital Countdown Timer USB Switch Cable

Take control of your USB-powered devices with this 24-Hour Digital Countdown Timer Switch. Whether you're managing phone chargers, desk fans, LED strips, or other 5V USB devices at home or in the office, this compact and intuitive timer makes automatic shutoff effortless. Simply set your countdown, and let the device do the rest.

Key Features

• 24-Hour Adjustable Countdown: Set both hours and minutes independently. The hour threshold adjusts in 1-hour increments; the minute threshold adjusts in 5-minute increments — giving you precise control up to 24 hours.
• Digital Display Screen: A clear, easy-to-read digital screen shows the countdown progress in real time, so you always know exactly how much time remains.
• Simple Knob Controls: Press the knob once to switch between hour and minute adjustment modes. Rotate the knob to set your desired value. Press and hold for 3 seconds to power off.
• Plug & Play — No Setup Hassle: Uses a standard USB male/female interface. Just plug it inline between your USB power source and your device — no apps, no wiring, no complicated programming.
• 5V Low-Voltage Safety: Operates at a safe 5V, making it ideal for everyday USB devices without risk of electrical overload.
• Compact & Portable: Lightweight plastic body that's easy to carry between home, office, or travel use.

How to Use

1. Connect the timer inline between your USB power source and your device.
2. Press the knob to select hour or minute adjustment mode.
3. Rotate the knob to set your desired countdown time.
4. Wait approximately 5 seconds — the display colon (":") will begin flashing, indicating the timer has started.
5. The connected device will automatically switch off when the countdown reaches zero.

Specifications

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Frequently Asked Questions

Q: What devices can I use this USB countdown timer switch with?

A: This digital countdown timer switch works with any USB-powered device operating at 5V, such as phone chargers, LED strip lights, USB fans, desk lamps, and other standard USB accessories. It is not compatible with devices requiring voltages other than 5V.

Q: How do I start the countdown timer after setting the time?

A: After adjusting your desired countdown hours and minutes using the knob, simply wait approximately 5 seconds. The colon (":") on the digital display will begin flashing, which indicates the countdown timer has started and your device will automatically shut off when the timer reaches zero.

Q: Can I adjust both hours and minutes independently?

A: Yes! Press the knob once to toggle between hour mode and minute mode. In hour mode, rotate the knob to set hours (increments of 1 hour, up to 24 hours). In minute mode, rotate the knob to set minutes (increments of 5 minutes). This gives you flexible and precise control over your countdown duration.

Q: Does this timer require batteries or additional power?

A: No batteries are required. The timer is powered directly through the USB connection itself at 5V, so no separate power source or batteries are needed.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.