Description
Car Remote Signal Jammer – 315 / 433 / 434 / 868 MHz
Portable RF Interference Device for Automotive System Testing
The Portable Car Signal Jammer is a compact, battery-powered RF device developed for controlled diagnostic testing of automotive remote controls, keyless entry systems, and wireless vehicle security equipment.
Designed to interfere with selected radio-frequency channels, this single-mode unit helps evaluate how compatible automotive systems respond to interrupted or suppressed wireless communication.
With support for multiple frequency bands and an integrated rechargeable battery, it offers a portable solution for authorized RF testing environments.
Key Features
- Multiple Frequency Bands – Covers 315, 433, 434, and 868 MHz applications.
- VAG Remote Compatibility – Includes the 434 MHz reference frequency associated with Volkswagen Audi Group remote controls.
- Wide Interference Coverage – Reported operating distances of 30–70 meters under typical conditions.
- Rechargeable Power Supply – Integrated battery eliminates the need for continuous external power.
- Portable Construction – Compact design for convenient positioning during diagnostic testing.
- Single-Mode Operation – Designed for radio-frequency interference testing.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Portable RF Signal Jammer |
| Operating Mode | Single Mode |
| Frequency Band 1 | 315 MHz |
| Frequency Band 2 | 433 MHz ±2 MHz |
| Frequency Band 3 | 434 MHz ±2 MHz |
| Frequency Band 4 | 868 MHz ±2 MHz |
| Frequency Adjustment Range | 4 MHz |
| Power Supply | Built-in Rechargeable Battery |
| Reported Jamming Distance | 30–70 m |
| Stated Effective Radius | 50 m or More |
| Specified Signal-Blocking Range | Up to 50 m |
Operating Range & Performance
The device is described as providing RF interference across a relatively wide area, although actual results depend on the surrounding environment and the characteristics of the wireless equipment being tested.
Manufacturer-reported range figures:
- 30–70 m: Typical interference distance under specified operating conditions.
- 50 m or more: Reported effective interference radius.
- Up to 50 m: Signal-blocking distance stated in the product specifications.
Note: These measurements reflect different testing conditions and should be regarded as approximate rather than guaranteed performance values.
Power & Portability
The integrated rechargeable battery allows the device to function independently of a permanent external power source.
Its compact, portable configuration supports flexible placement and convenient handling during authorized wireless-system evaluations.
Recommended Testing Applications
This RF interference device is intended for controlled, authorized diagnostic activities, including:
- Evaluation of automotive remote-control communication.
- Testing the response of vehicle alarm systems to RF interference.
- Assessment of keyless entry communication reliability.
- Examination of wireless security equipment under disrupted radio conditions.
Important Usage Information
For authorized testing purposes only.
Operation of RF jamming equipment may be restricted or prohibited under local telecommunications regulations. Use only in legally permitted, controlled environments where interference cannot affect unrelated devices or communication systems.


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