Refrigerator Freezer Car Thermometer & Timer °C/°F 12/24 Hour Indoor Outdoor Temperature Display with 1m Sensor M89BOOTDTYL Freezer Meter Car Thermometer & Clock °C/°F 12/24 Hour Indoor Outdoor Temperature Display with 1m SensorDescriptions:This product is mainly suitable for rooms, cars, offices, classrooms, etc. When using, place the probe outside the window and display indoors to observe the outdoor temperature. There is no need to open the window or open the door. When the air conditioner is turned on in summer and winter, it can be adjusted over time according to the change in outdoor temperature. Feautres: Indoor and Outdoor Dual Channel Temperature Measurement With Clock and Temperature Display Function C/F12H/24H Free Switching Practical and Convenient Accurate Measurement SpecificationIndoor Temperature Range: -50 to +70°C (-58 to +158°F)Outdoor Temperature Range: -50 to +70°C (-58 to +158°F)Temperature Accuracy: 1°C (0-30°C)Temperature Update Interval: 10 seconds. Battery: 1 aaaa (not included)Sensor: 1 meterPackage included:1 * In-Out Thermometer & Timer