Hitch Lock ORNO ELEKTRA R4 with Symmetrical Key, Model R4-12.20

ORNO ELEKTRA R4 hitch lock model R4-12.20 is a mechanical locking device designed to secure trailer couplings against unauthorized uncoupling and theft. The unit integrates a symmetrical key cylinder and a robust body that fits standard tow hitches, providing a direct mechanical barrier that prevents the coupling from being opened while installed. The product is intended for use on trailers and towing setups where a simple, reliable physical lock is required to protect the coupling.

Advantages

The hitch lock offers straightforward mechanical operation with a symmetrical key cylinder for convenient key insertion from either orientation. Constructed to withstand regular outdoor use, it provides a physical deterrent against tampering and accidental uncoupling. The design is compact and compatible with common hitch shapes, enabling quick installation and removal without electrical connection or batteries.

Suitable for

• Securing trailers and caravans during parking or storage
• Preventing unauthorized uncoupling while towing or when stationary
• Use with standard ball-type tow hitches on cars, vans, and light trucks
• Temporary or long-term protection of trailer couplings in yards and public areas

Key specifications

• Lock type: mechanical hitch lock with symmetrical key cylinder
• Compatibility: fits standard ball-type trailer couplings
• Material characteristics: metal lock body designed for outdoor use
• Operation: manual key-operated locking and unlocking
• Installation: removable, no power source required

How to use

Place the hitch lock over the trailer coupling so that the lock body prevents movement of the coupling mechanism, then insert the symmetrical key and turn to engage the locking cylinder. Verify the lock is fully engaged by attempting to move the coupling; the device should block operation when correctly installed. To remove, insert the key, turn to unlock, and withdraw the lock from the coupling. Store keys in a secure place and carry a spare key to avoid being locked out of the towing setup.

Usage recommendations

For reliable protection, regular visual inspection of the lock for corrosion or damage is recommended. Clean and lubricate the key cylinder with a dry graphite or silicone-based lubricant as needed, and avoid exposing the lock to aggressive chemicals. If used in coastal or highly corrosive environments, check mounting fit and function more frequently and consider additional protective measures for prolonged life span.