Fridge Freezer Car IN and OUT Thermometer and Clock / 12/24 Hour Internal External Temperature Display with 1m sensor Descriptions: This product is mainly suitable for rooms, cars, offices, classrooms, etc. When using, put the probe outside the window and the 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 the summer and winter, it can be adjusted in time according to the change of the outdoor temperature. Feautres: Internal and external dual-channel temperature measurement With clock & temperature display function C/F free switching 12H/24H free switching Practical and convenient, accurate measurement Specification Indoor temperature range: -50 to +70 (-58 to + 158) Outdoor temperature range: -50 to +70 (-58 to + 158) Temperature accuracy: 1 (0-30 ) Temperature update interval: 10 seconds. Battery: 1XAAA (not included) Sensor: 1 meter Package included: 1 * In-Out Thermometer and Clock