Plastic and electronic plug in unit for repelling rodent pests inside the home. Ultrasonic frequencies. 24 hour protection. Protects area up to 46 sq m/495 sq ft. Safe for use near children, cat and dogs. Ideal alternative to bait and traps. Plug into any socket. Size (H)8.5, (W)6.5, (D)6.5cm. Manufacturer's 2 year guarantee.