1. design, convenient to use. Made of fireproof and environmental ABS material. 2. Perfectly suitable for some models of for cars, directly installed in the reserved switch hole. 3. Two temperature sensors can display the temperature inside and outside the car at the same time. Operating voltage: 12V Temperature measurement range: -20-70℃ Temperature sensor wire length: 295cm/95cm Fuse: F4AL250V Production according to 1:1 ratio of the car interface Installation method: 1. Use a steel ruler or plastic sheet to pry off the blank buttons on the dashboard of the car 2. To get electricity, you can connect to the lighter, battery, or fuse box. If you connect to the fuse box, you can buy electrical appliance, which is simpler and 3. The probe lead in the car can be placed near the driver's accelerator brake, or a small hole can be drilled on the dashboard to lead out the probe. The temperature probe wire outside the car can be placed in the door seam, under the mirror or other suitable installation place Some suitable models for: for 2004---2009 for 2005---2008 for Prado 2004---2006 for 2009 for 2005---2006 for 2013---2016 for Senna 2005 for 2011 Material:plastic colour:black Package Contents: 4 x dual temperature sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.