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Professional Measurement(Differrent from others) of temperature and humidity (Industrial standards,sensor is made by silicon labs)
Please purchase multiple products if temperature and humidity are needed to check at various site simultaneously.
The effective transmission distance is 10-30feet(with barriers) or 200feet(without barriers)
The package come with two 2025 batteries, but the device only require one battery to operate.each of the battery can be used for one month.
Please restart the machine , shorten distance , reduce barriers or change the battery if there is no signal for more than 1 minutes