Viano OS4 Radar Car Marten, Rodent and Mouse Repeller
Description
VIANO OS-4 – radar-based car marten, rodent and mouse repeller
VIANO OS-4 is an advanced third-generation repeller that effectively protects your vehicle from martens, rodents and mice. The Viano OS4 model combines a radar sensor, ultrasound and strobe flashes, providing comprehensive protection for the engine compartment – even during extended parking periods.

Why choose VIANO OS-4? Martens and rodents can cause serious damage to vehicles – they chew through cables, insulation and hoses, leading to costly repairs. The OS-4 model has been designed to effectively deter pests before they can damage your car.
The built-in motion radar is a key innovation of this model. The moment even the slightest movement is detected under the vehicle bonnet, the system immediately triggers an intensive series of strobe flashes that effectively scare away the intruder. The Viano OS4 model significantly increases deterrence effectiveness compared to devices based solely on ultrasound.
Key features
- Motion radar – detects the slightest movement under the bonnet and triggers strobe flashes
- Two ultrasonic buzzers – emit a wide frequency range with automatic modulation, preventing animals from becoming accustomed
- Automatic on/off – the device only operates when the engine is off, activating automatically after driving ends
- Very low power consumption – up to 5 months of operation without risk of battery discharge
- Simple installation – two wires with ring connectors, no need to cut cables
- Safe for domestic animals – ultrasound inaudible to dogs and cats


Durability and reliability
The construction uses brass piezoelectric speakers with grilles, which provide exceptional resistance to the harsh conditions in the engine compartment – temperature fluctuations, humidity, contact with oil and other operating fluids. Unlike cheap alternatives with membrane speakers, VIANO OS-4 is equipment designed for years of trouble-free operation.

Polish quality – the device is manufactured in Poland from the highest quality components. Unlike cheap equivalents imported from Asia, which are not adapted to European climatic conditions, VIANO OS-4 is durable, effective and trustworthy equipment.
Technical specifications
- Supply voltage: 12–15 V DC
- Current consumption in operating mode: approx. 25 mA
- Current consumption at rest: approx. 2 mA
- Ultrasound frequency: variable, automatic modulation
- Motion detection: radar sensor
- Light signalling: LED strobe flashes
- Certification: CE
- Country of manufacture: Poland
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Technical data
| Type of power supply | Car battery 12V |
| Repelled animals | Rodents / Martens |
| Mounting location | Vehicles |
| Motion sensor | Yes |
| Emission angle [°] | 120 |
| Range [m] | 200 |