Unique design, convenient to use. Made of fireproof and environmentally friendly ABS material. Perfectly fits select car models and installs directly into the reserved switch hole. Equipped with two temperature sensors to display both interior and exterior car temperatures simultaneously. Operating voltage: 12V Temperature measurement range: -20 to 70°C Temperature sensor wire length: 295cm and 95cm Fuse: F4AL250V Designed to match the car interface with a 1:1 ratio for precise fitment. Installation instructions: 1. Use a flat tool such as a steel ruler or plastic pry tool to remove the blank button on the car dashboard. 2. Connect the power source to the cigarette lighter, battery, or fuse box. If connecting to the fuse box, use an appropriate electrical adapter for easier installation. 3. Route the internal temperature probe near the driver’s accelerator or brake area. Alternatively, drill a small hole in the dashboard to route the probe. The external probe can be placed in the door seam, under the mirror, or in another suitable location. Compatible with select models including: Prado (2004–2009, 2005–2008) Prius (2004–2006, 2009) Senna (2005–2006, 2013–2016) Hiace (2005, 2011) Material: Plastic Color: Black Package Contents: 1 x Dual Temperature Sensor Note: The package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: ±1–3cm.