How to distribute network: In the operation interface, press and hold the set button for more than 5 seconds to enter the Press pairing state, and then press and hold the set button for 5 seconds to enter the AP pairing state. Press mode: the blue light flashes 4 times every 1 second AP mode: blue light flash continuously After the product is powered on, it will enter Press pairing mode by default. If pairing fails, please select AP mode, connect to WiFi network "sinilink product" with the password of "12345678 " and operate according to the app prompt. size:72x27x21mm Material:plastic colour:White Package Contents: 3 x wifi time service clock module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.