津巴布韦采购需求：透明孵蛋器、商用孵蛋器、数码孵蛋器、孵蛋器、在线孵蛋器、全自动孵蛋器

I need some assistance with the user manual for a specific egg incubator I recently purchased. I've encountered an issue where the alarm is constantly on, and I'm unsure how to deactivate it. Any step-by-step guidance on resolving this would be greatly appreciated. Additionally, I'd like to know the recommended humidity levels for incubating chicken eggs. This information is crucial for ensuring the best hatch rates. If you could provide insights or direct me to the relevant sections in the manual, that would be very helpful. Thank you!