Technical Parameters:
    Power: 6F22 9V battery one;
    Operating Current: !#!lt!*!100mA;
    Sound:!#!gt!*! 105db
    Working temperature: -15 degrees to 75 degrees;
    Storage Temperature: -40 degrees to 85 degrees;
    Humidity: 5% to 98%.
  Precautions:
  1. The product can be installed correctly rain， but can not be immersed in water;
  2. It is recommended to use 9V alkaline. In winter， some cold areas， use the cold can be good electrical
     Pool， was reduced when the alarm sound， please replace the battery;
  3. When not in use for a long time， remove the batteries， so as to avoid battery leakage and damage the product.