Unique design, convenient to use. Made of fireproof and environmentally friendly ABS material. Suitable for certain vehicle models, designed to be directly installed in the reserved switch hole. Equipped with two temperature sensors that display both interior and exterior car temperatures simultaneously. Operating voltage: 12V. Temperature measurement range: -20°C to 70°C. Temperature sensor wire lengths: 295cm and 95cm. Fuse: F4AL250V. Designed to match the car interface with a 1:1 ratio. Installation instructions: Use a steel ruler or plastic sheet to carefully remove the blank buttons on the dashboard. For power connection, options include the cigarette lighter, battery, or fuse box. If connecting to the fuse box, an additional electrical adapter may be used. The internal temperature probe can be placed near the driver’s accelerator or brake area, or routed through a small drilled hole in the dashboard. The external probe can be positioned in the door seam, under the mirror, or another suitable location. 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 includes: 1 x Dual temperature sensor. Note: Other items not included. Due to lighting and display differences, the actual product color may vary slightly from the image. Measurement error allowance: +/- 1-3cm.