The opening size is 41 mm in diameter (measurement has a small error).
The shape diameter is 45.2 (the measurement has a small error).
Weight: 25 grams (without battery).
The humidity measurement range is 10% to 99%.
Humidity display resolution is 1%.
The humidity sampling period is 10 seconds (1 minute).
Humidity measurement accuracy ± 5%.
Rated voltage DC1.5v (1 AG13 button battery).
The temperature measurement range is -50 to 70.
Temperature measurement accuracy ± 1 degree (at normal temperature).
Flip to the back of the product.
Push the battery cover in the direction indicated by the arrow.
Place two LR44 button batteries into the battery compartment.
Fix the product, touch the sensing line to the object under test, and the display shows the current temperature.
Size: 45*15.5 (mm)
Electronic products have errors, do not buy high requirements, the product humidity is about 5% positive and negative at room temperature, the temperature is about plus or minus 1 degree.v