The Pest Repellent will have great effect in 20-30 square meters in the room.
The ultrasonic audio sent out from this machine is far away from hearing range of human being, so it will not do harm to human being and pets. Also will not have affect on house machine.
Input voltage: AC100-240V, 50/60Hz.
Shell material: durable hard plastic. Plug type: Standard US-plug.
