M229 Marten repellent with electric shock, high frequency tones and flashing LEDs and 6 double high-voltage contact plates with plus + minus connection. With built-in batteries (4 x AA), independent of the electrical system. No electrical connection to the electrical system of the car required. Advanced microprocessor control: the high frequency scuff signals come irregularly and at random intervals to avoid getting used to. Using a vibration sensor, the device turns on automatically only when the car is parking. The 2-pin double contact plates ensure that the marten will definitely get an electric shock, even if it is not on a metal surface in the car (it only needs to touch both contact surfaces on the contact plates at the same time). Batteries: required 4 x AA (UM 3 mignon, alkaline manganese or similar high quality). Power consumption: diameter approx. 0.25 mA. Battery life: approx. 1 year, depending on the quality of the batteries. Off switch: there is a switch on the side of the device. Speaker: high-performance piezo speaker with curved aluminium membrane for wide sound radiation. Sound pressure: max. Approx. 105dB ±20% Ultrasound: sinusoidal, randomly interrupting and varying frequency against habituation. (approx. One pulse every 9-30 seconds, approx. 21-24.5 kHz). High voltage: approx. 220-260 V/DC. 3 LED indicators: flashing to control the ultrasound, high voltage + battery vibration switch: built-in that switches off the marten scarecrow when the engine is running and activates again in the parking position (engine is not running). Temperature range: approx. -20 to +80°C (also depending on the batteries used, which usually have a more restricted temperature range). Test mark: yes, the E1 mark from the Federal Motor Transport Authority. Dimensions: approx. 140 x 100 x 43 mm (without switch). Dimensions: 2-pole high voltage shock plates: approx. 60 x 60 x 12 mm plus + negative contacts on 2 levels