Gr8 Garden Electronic Mouse Trap Mice Rat Killer Pest Control Electric Shock Rodent Zapper. There are three pieces of stainless steel in the high voltage box of this rodent killing machine. Please do not touch the metal pieces during high voltage to prevent electric shock. When the red light flashes once every 2 seconds after powering on or after hitting a mouse, it means that the battery must be replaced to avoid affecting the rodent killing function. When changing the battery, turn off the switch. When not in use for a long time, please turn off the voltage switch and remove the battery to prevent the liquid from damaging the machine. This equipment should be kept out of the reach of children, and should not be placed in the rain or washed with water. Do not repair or move any fixed parts inside the device without permission to avoid electric shock. If the parts of the device are damaged, they must be returned to our factory for repair by a professional. Dangerous voltage! Keep away