- Dual temperature display for inside and outside the vehicle - Compatible with 12V and 24V vehicles; universal car use with simple installation - Designed for automotive use with high temperature and vibration resistance - Adjustable bracket for flexible mounting and secure positioning - Includes 5-meter cable for external probe - Low power consumption for energy efficiency - Temperature measurement range: Inside: -20°C to +70°C Outside: -50°C to +70°C - Installation instructions: 1. Mount the unit in the vehicle, place the outdoor probe outside the door, insert an AG10 battery; the LCD will display current indoor and outdoor temperatures. 2. Connect to the vehicle’s power supply to enable blue backlight illumination. 3. Without vehicle power, the device functions as a standalone thermometer without backlight. - Package includes: 1 x Thermometer 1 x User manual 1 x Charging cable