Here is wifi function instructions: https://cdn.shopify.com/s/files/1/0589/8600/4658/files/WIFI_1.pdf?v=1757062838 Here are some using tips you may need-- 1. If you can only set the 149℉ and can not set the temperature up to 194℉, please don't worry, just simply press and hold the temperature "➖ "button for about 40~60 seconds to hear two ticks to switch to high temperature mode. 2. All the wiring must be ensured to be connected to the plugs of the corresponding labels/colours; otherwise, the product will not work properly. 3. The door of the sauna can be opened from both the inside and outside. If you find the door of your sauna room opens inward, you can try to enter the sauna first then push the glass door outward to keep it open. We suggest opening the door outward so that the sealing strip on the door can fit closely when in use. 4. Since the sauna stone contains natural minerals, it may have a certain smell. We suggest using the sauna stones for the first and second time by opening the door and dry heat it. Wait until there is no smell before entering the sauna room to enjoy the sauna. Please note when using the sauna stove, do not always dry heat it, after putting in the sauna stone and wait for the sauna stove wire to heat up and turn red, water a small amount on the sauna stone. After the water evaporates, water again to achieve the effect of heating up. Need help after receiving the product? Please feel free to send us text message via phone number +1 2816619553 with your order number and problems to get customer service. 24-hour Customer Service for you.