This car cigarette lighter plug with an outdoor probe provides real-time temperature and battery voltage display inside your vehicle. Equipped with a fixed outdoor probe placed inside the car door, it offers accurate environmental data to improve your driving safety and comfort. Key benefits include: - Clear interior temperature monitoring: The display shows current inside temperature marked as IN, along with the vehicle's battery voltage, helping you monitor vehicle health and cabin comfort at a glance. - Outdoor temperature awareness: Press the IN/OUT button to switch and view outdoor temperature marked as OUT. This assists in planning trips and avoiding unsafe driving conditions due to cold weather. - Low-temperature alert: When outdoor temperature drops below -1°C, an ICE indicator lights up, alerting you to icy conditions outside. This allows you to exercise caution and prepare for potential icy road surfaces. - Personalized display: You can toggle between blue and orange backlight colors by pushing the side switch, enhancing visibility and personal preference during day or night driving. Suitable for various scenarios: - Winter driving: Helps you stay aware of outdoor conditions to prevent accidents caused by icy roads. - Vehicle maintenance: Monitors battery voltage to anticipate electrical issues before they become critical. - Camping or outdoor activities: Ensures safe vehicle operation in cold environments by providing accurate ambient temperature readings. Designed for compatibility with standard 12V vehicle power outlets, the device features a compact size for easy installation. It is constructed from durable materials to withstand daily use. The intuitive interface and reliable performance make it an essential tool for enhancing driving safety and vehicle management in all weather conditions.