Digital Refrigerater Therometer Wireless Digital Audible Alarm Fridge Freezer Thermometer with 2PCS Sensor Min/Max Display.

Description: This is a wireless digital freezer therometer. It can be used in the freezer and act as therometer indoor and outdoor. Its own audible alarm can warn you of the exceeded temperature in time. Specification: Material: ABS Update Rate: 10 seconds Indoor Temperature range: 0 ? ~ 50 ? (32 ? ~ 122 ?) Outdoor Temperature range: -40 ? ~ 60 ? (-40 ? ~ 140 ?) Power Supply: 2 X AAA battery for the host, 4 X AAA battery for the sensor (Not included) How to Install the Sensor: The sensors are equipped with a spring-loaded clips along with a Plastic grip to tightly attached to the edge of a shelf. The display is magnet-mountable on a fridge, or use the integrated keyhole for wall mounting. Package Included: 1 x Host (Battery not included) 2 x Sensor (Battery not included) 1 x User Manual Notice: Do not install the reverse battery. Do not put the receiver near metal. Avoid transmitter directly in the rain.