Refrigerator Thermometer High Precision Sound Alarm Wireless Wall-mounted Digital Hygrometer for Home

Description:
The thermometer features wide measurement range, which is practical and useful.
The thermometer is featured with high sensitivity and quick response, which can sound audible alarm if the temperature exceeds the preset value.
Made of ABS, the thermometer is eco-friendly and durable to use.
The length of the thermometer is 9.8cm, width is 8.5cm and thickness is 2.2cm. The length of the sensor is 10.5cm, width is 3.5cm and thickness is 3.8cm.
The thermometer is especially suitable for being used in home.

Item Name: Outdoor Thermometer
Material: ABS
Style: 1: with 1 Sensor, 2: with 2 Sensors(Optional)
Transmission Rate: 433MHz
Alarm Time: about 2 Min
Transmission Distance: 100m
Indoor Temperature Range: -10-60 Degrees Celsius
Outdoor Temperature Range: -50-70 Degrees Celsius
Temperature Accuracy: ±1 Degrees Celsius
Humidity Range: 20%-99%
Humidity Accuracy: ±5%
Thermometer: 2 x AAA Batteries (Not Included)
Sensor: 2 x AA Batteries (Not Included)
Features: Precise, Mini, Wireless
Size Details:
Thermometer: 9.8cm x 8.5cm x 2.2cm/3.86" x 3.35" x 0.87"
Sensor: 10.5cm x 3.5cm x 3.8cm/4.13" x 1.38" x 1.50"

Notes:
Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.
Please allow slight dimension difference due to the manual measurement.
In order to receive the true temperature value, avoid installing the sensor in direct sunlight. It is recommended that the sensor be installed on the outdoor wall facing north. You can install a screw on the wall and the outdoor sensor can be hung on it. The electronic part of the outdoor sensor has a layer of moisture-proof synthetic resin to protect the circuit.

Attention:
Do not mix positive and negative poles of the battery.
The sensor should be kept from direct rain.
If the sensor signal connection is interrupted, long press the clear button for 3 seconds to restore the signal connection.

Package Includes:
Style 1:
1 x Outdoor Thermometer
1 x Subsidiary Machine
1 x User Manual
or
1 x Outdoor Thermometer
2 x Subsidiary Machines
1 x User Manual