Attention: Make sure all people and pets leave the room after the ozone generator is turned on and started. Close the doors and windows before starting. After the ozone generator stops working, please ventilate the room for half an hour at least to make sure there is no ozone odor in the room before entering. Not for sale in California. Product Specification: The ozone generator has an output of 110W, and the working efficiency is 25,000 mg/h, weight 4 lbs, size of the machine is 10.2"D x 7.5"W x 8.7"H, with a handle for easy carrying and moving. Easy to Operate: Plug in the power cord, press the switch button, turn the timer knob to set the time then the machine will start working. When the time is up, the ozone generator will stop working automatically. While the odor in the room dissipates, turn off the machine and unplug the power cord. Timer Setting: The ozone generator's timer total 120 minutes, you can set the working hours according to the size