1. Unique design, convenient to use. Made of fireproof and environmentally friendly ABS material. 2. Compatible with select car models, designed to install directly into the reserved switch opening. 3. Equipped with two temperature sensors to display both interior and exterior vehicle temperatures simultaneously. Operating voltage: 12V Temperature measurement range: -20 to 70C Temperature sensor wire length: 295cm and 95cm Fuse: F4AL250V Precision design based on 1:1 car interface specifications Installation method: 1. Use a steel ruler or plastic tool to carefully remove the blank buttons on the car dashboard. 2. For power connection, options include the cigarette lighter, battery, or fuse box. Connecting to the fuse box is recommended for a safer and more secure installation. 3. The internal temperature probe can be positioned near the drivers accelerator or brake area. Alternatively, a small hole can be drilled on the dashboard to route the probe. The external temperature probe can be placed in the door seam, under the side mirror, or another suitable location. Compatible with select models including: Toyota Corolla 20042009 Toyota 20052008 Toyota Prado 20042006, 2009 Toyota Prius 20052006 Toyota Corolla Altis 20132016 Toyota Senna 2005 Toyota Hiace 2011 Material: Plastic Color: Black Package Contents: 1 x Dual Temperature Sensor Note: Light and display differences may cause slight variations between the product color in images and the actual item. Measurement error allowance: +/- 1-3cm.