Viofo OP100 OBD-II USB Mini Constant Power Parking Mode Cable for A129 Series
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The Viofo OP100 is an OBD-II USB Mini constant power cable for parking mode, compatible with the A129 series (A129 Duo, A129 Plus, A129 Pro) and A119 V3. It plugs directly into the vehicle's OBD-II port, requires no fuse box wiring, and includes a parking timer, on/off switch and low voltage protection.
If your dash cam uses USB-C, the Viofo HK3 Hardwire Parking Mode Power Cable is an alternative hardwire option for the A129 series.
Key specifications
- Input: vehicle OBD-II port, 12V and 24V systems
- Dash cam cable: USB-A to USB Mini (A119 V3, A129 Duo, A129 Plus, A129 Pro)
- USB-A output: 5V 3A
- Type-C output: 5V 3A / 9V 2A / 12V 1.5A
- Parking recording timer: 3 hours / 24 hours / always on
- Power switch: on / off
- Low voltage protection: shuts down within 90 seconds below 12V / 24V
- Operating temperature: -10 to 50°C
Easy Installation
The OP100 is plug and play. Plug the cable into the vehicle's OBD-II port and connect it to your Viofo dash cam — no fuse box wiring required. The cam receives constant power even when the vehicle is off, and the OBD-II routing keeps cables hidden for a neater interior than a cigarette lighter solution.
Note: OBD-II port location varies by vehicle make and model. Refer to your vehicle's owner's manual.
Dual Output Ports
The OP100 has two output ports: one dedicated to powering the dash cam, plus a Type-C port to charge a mobile device simultaneously.
Adjustable Power Switch
The on/off switch gives direct control over the dash cam's power supply, helping to save energy and protect the vehicle battery.
Parking Recording Time Switch
A three-position time switch (3h / 24h / ∞) sets how long the OBD power supply runs after the dash cam enters parking mode. Power cuts off automatically when the selected time expires. The ∞ setting provides continuous power with no time limit.
Low Voltage Protection
If the cable detects battery voltage below 12V or 24V, it shuts down within 90 seconds to protect the vehicle battery.
Explore the full range in Viofo Hardwire Kits.
Specification
| Product Name | VIOFO OP100 OBD-II Constant Power Cable |
|---|---|
| Low Battery Protection Voltage | Activates when input is below 12V / 24V |
| Parking Recording Timer | 3 Hours / 24 Hours / Always On |
| Power Switch | ON / OFF |
| Indicator Light | Blue: Power On / Off: Power Off or Low Voltage Protection Activated |
| Input Interface | Vehicle OBD-II Port |
| Input Voltage | Supports 12V & 24V Systems |
| Output Interfaces | USB-A port for dash cams, Type-C port for mobile devices |
| Output Voltage | USB-A: 5V 3A / Type-C: 5V 3A / 9V 2A / 12V 1.5A |
| Operating Temperature | -10 to 50°C (14 to 122°F) |
| Dash Cam Cable | USB-A to USB Mini |
What's Included
- OBD-II Power Cable x 1
- Reclosable Fasteners x 2
- User Manual x 1
- Packing Box x 1
- USB Mini Parking Mode Cable
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About the Viofo OP100 OBD-II USB Mini
From our tech experts at CEN
The OP100 in USB mini fitting takes constant power from the OBD-II port for parking mode on older VIOFO cameras.
Who it suits
Owners of earlier cameras with the mini USB connector who want parking mode without a fuse-box install.
Our tech experts advise
Check your camera’s connector before ordering, since mini USB and USB-C are not interchangeable. See dash cam installation if you would rather have it wired in properly.
Explore the full Viofo range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Viofo
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Frequently Asked Questions
Q: Is this accessory compatible with my dash cam?
A: Dash cam accessories are generally model-specific. The compatible camera models are listed in the product description, and you can contact CEN to confirm compatibility before ordering.
Q: What does a hardwire kit do?
A: A hardwire kit powers your dash cam directly from the vehicle's fusebox, hiding the cable and enabling parking mode. Kits include battery protection so your car battery is never drained below a safe level.
Q: Why would I add a dash cam battery pack?
A: A battery pack powers parking mode for longer periods without drawing on your car battery at all. It charges while you drive and is the recommended option for extended parking protection.
Q: Can CEN fit this accessory?
A: Yes. CEN offers professional dash cam and accessory installation from our Nottingham premises. Contact us to book.
Q: Which dash cams does this OP100 version suit?
A: This is the USB Mini version of the OP100, listed for the VIOFO A119 V3, A129 Duo, A129 Plus and A129 Pro.
Q: Do I need to wire the OP100 into the fuse box?
A: No. The OP100 plugs into the vehicle OBD-II port and connects to the dash cam, giving it constant power even when the vehicle is off.
Q: How long will the OP100 power parking mode?
A: A switch sets the power supply time after the dash cam enters parking mode to 3 hours, 24 hours or always on. Low voltage protection shuts it down within 90 seconds if the battery voltage falls below 12V (or 24V on 24V systems).
