Wireless Freezer Thermometer Electronic Refrigerator Temperature Sensor 2 Pack

Indoor temperature detection range -10C-60C (32F-122F); Outdoor temperature detection range -40-60 (-40F-140F); Transmission range: 100 meters/328 ft., no obstructions. This wireless refrigerator thermometer has an audible alarm and can manually set the maximum/minimum alarm value. It will ring when the temperature value reaches your preset maximum/minimum alarm value. But when the temperature alarm is just turned on, no matter whether the temperature reaches the alarm's temperature range, it will not alarm and will ring after 10 minutes. This digital refrigerator and freezer thermometer includes remote sensors, which can display indoor temperature and 1 sets of outdoor temperatures at the same time. Even if the sensor is placed outside or in a warehouse, you can record the temperature without leaving your home. The maximum/minimum temperature data is updated every 24 hours, but there is no work to record the maximum/minimum temperature data, and the maximum/minimum temperature cannot always be maintained. With hanging holes and brackets on the back, you can fasten the main body to the surface of magnetic objects like refrigerator doors and microwave ovens, or you can hang it or stand on a table. Easy to mount and use. Power supply: 2 X AAA batteries and 4 X AA batteries (not included) Color:white+black Material:plastic type:1 to 2 Package Contents: 1 x thermometer 2 x transmitter 1 x English manual Only the above parcel content, other items are not included. Note: Light reflection and various displays may cause the shade of the unit in the picture a little various from the real thing. The measurement allowed error is +/- 1-3cm.