Specifications ◆Weight：17.6 oz ◆Size：7.1 * 5.3 * 1.7 inch ◆Humidity range: 25%-95%, tolerance: ± 5% ◆Indoor temperature range: 32℉ - 122℉, tolerance: ±1.8℉ ◆Outdoor temperature range: -22℉ - 140℉, tolerance: ±1.8℉ ◆Radio Frequency：433MHz Notice: ⚠The transmitter may stop working if it is exposed to rain, please keep it away from the rain. ⚠Product only come with one outdoor transmitter, please contact the seller if you need more outdoor transmitter s. Questions & Answers 👻Question 1: How to connect the main unit and tranmitter? What should I do if the connection lost? 👻Answer 1 1.Open the back cover of transmitter, find its channel switch and choose channel 2. 2.Press CHANNEL button on the main unit until its channel also become channel 2. 3.Hold CHANNEL button for 5 seconds, signal icon starts flashing. 4.Main unit and transmitter connected via channel 2, Main part shows outdoor date. 5.Radio signals will be absorbed by metal objects, please try to change transmitter's position. 👻Question 2: Why does the temperature and humidity of the product show deviations from the real temperature and humidity? Why does the product shows different outdoor indoor date when the transmitter and main unit are put together? 👻Answer 2Host and transmitter are calibrated by precision reference when they are manufactured, but each product has a slight difference in their electronic material used to determine temperature and humidity. Even if the product is calibrated, the measured data can't be as accurate as standard references, this error is going to be less than 5%.
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