Based on this product's specifications, here are some alternatives and similar models
Ultrasonic Mosquito Repeller for Outlet CHICCO Zanza 07221.10 — plug-in nursery insect deterrent
Summary description:
CHICCO Zanza is a plug-in ultrasonic mosquito repeller designed for domestic and nursery use. Model 07221.10 connects to a standard wall outlet and emits ultrasonic frequencies to deter mosquitoes and flying insects without chemicals. Intended for continuous indoor use in bedrooms and playrooms to help reduce insect presence and support a safer, quieter environment for babies.