1. Unique design, convenient to use. Made of fireproof and environmentally friendly ABS material. 2. Compatible with select vehicle models, designed to install directly into the reserved switch opening. 3. Equipped with two temperature sensors to display both interior and exterior car temperatures simultaneously. Operating voltage: 12V Temperature measurement range: -20°C to 70°C Temperature sensor wire length: 295cm and 95cm Fuse: F4AL250V Precision design based on 1:1 car interface specifications Installation instructions: 1. Use a flat tool such as a steel ruler or plastic pry tool to carefully remove the blank button from the car dashboard. 2. For power connection, options include cigarette lighter socket, battery, or fuse box. When connecting to the fuse box, use an appropriate automotive electrical adapter for easier installation. 3. Route the internal temperature probe near the driver’s side accelerator or brake area. Alternatively, drill a small hole in the dashboard to pass the probe through. The external temperature probe can be placed in the door seam, under the side mirror, or another suitable location outside the vehicle. Compatible with select models including: - 2004–2009 - 2005–2008 - Prado 2004–2006 - 2009 - Prius 2005–2006 - 2013–2016 - Senna 2005 - Hiace 2011 Material: Plastic Color: Black Package Contents: 1 x Dual Temperature Sensor Note: Lighting and monitor differences may cause slight variations in color between the product image and actual item. Measurement tolerance: ±1–3 cm.