About the 70mai OBD-II Hardwire Kit
Transform your parking surveillance system into a 24-hour solution with a plug-and-play installation that utilizes the OBD port without touching the fuse box, preserving your vehicle’s warranty. Its electronics provide a stable 5V/2.4A to any 70mai dash cam via Micro-USB or USB-C connectors and incorporate DIP switches to adjust voltage and cutoff time, preventing battery drain.
Tool-free installation
Simply locate the OBD-II port, connect the connector, and hide the 4m cable; the dash cam receives the ACC signal to automatically enter parking recording mode.
Configurable continuous power supply
The user selects between four protection limits (11.6 V / 11.9 V / 12.2 V / 12.5 V in 12 V vehicles; 24 V equivalent values) and six time intervals (1 h – 24 h or permanent) to balance range and battery health. The default setting is 11.9 V and 24 h.
Complete electrical protection
It integrates low voltage, overcurrent, overload, short circuit and reverse polarity protection , so the power supply is interrupted before the electrical system is damaged.
Fully compatible
It works with any 12V–30V battery and with all 70mai dash cam models, including the high-power 4K video models.
Our expert’s opinion
Compared to classic hardwires like the 70mai UP04 or the Viofo HK4 ACC-Fuse , this OBD kit stands out for its absolute simplicity : it requires no additional fuses or the location of hidden ACC lines. Furthermore, it offers a more precise cutoff range (11.6V to 12.5V) and up to 24 hours of adjustable monitoring, features that many competing kits limit to two voltage levels or a fixed time. As a point to consider, the OBD connector is usually accessible in the knee area, somewhat less discreet than installation on the fuse; even so, for drivers seeking speed, warranty protection, and detailed control over consumption, the 70mai OBD-II Hardwire Kit offers a performance-to-comfort ratio that is hard to match.
Technical specifications for the 70mai OBD-II Hardwire Kit:
- Brand: 70mai
- Model: OBD-II Hardwire Kit
- Compatible cameras: all Dash Cam 70mai
- Allows for 24-hour camera monitoring.
- Length of 4 meters
- Input: 12V~30V (adaptable to 12V/24V batteries)
- Output voltage: 5V 2.4A
- Voltage settings: 6
- Color: Black
Box contents:
- 1 x 70mai OBD-II Hardwire Kit







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