I bought this to keep mice out of the barn, but I'm not using it anymore because I've cleaned up. Regarding the current product, the lamp turns on, so it seems to be working, but the LCD display is not visible. I don't know if it's effective at the moment, so I'm selling it for 1100 yen (including shipping). Plugging it into an outlet emits ultrasonic waves, electromagnetic waves, and negative ions to repel mice. Uses ultrasonic waves that humans, dogs, and cats cannot detect. For homes, warehouses, stores, etc. Also unpleasant for cockroaches. Changing the installation location once or twice a week will increase the effect. Effective range: 200 square meters. White AC power temperature sensor with temperature measurement function. - 1 unit - Accessories: Power cord Thank you for looking.