Commercial Rodent Repeller and Bird Repeller Commercial Rodent Repeller is an ultrasonic bird and rodent repellent. The Pestrol Commercial Pest Repeller Features: Ultrasonic waves cause discomfort to rodents and birds but do not harm humans and pets. It’s one of the most sanitary ways to eliminate those annoying pests. Frequencies range from 20 kHz to 65 kHz through modulated ultrasonic waves emitted from the Pestrol Commercial Bird Repeller, forcing pests to leave. Ultrasonic waves that will not interfere with any electronic appliances. Quick results. In one to three weeks, your infestation will be eliminated and continual use of Pestrol Commercial Rat Deterrent will prevent further nesting and inhabitations. The Pestrol Commercial Pest Repeller has two settings: 1 for Birds 1 for Rodents Looking for something specifically for birds; try our new Commercial Bird Repeller Installation: The Warehouse Rodent Repeller should be placed at a height of 20cm to 80 cm above the ground. The waves should be aimed towards a hard wall surface or iron etc., so that the waves bounce off the walls of the room back and forth several times at various points, crossing their own path, until the room is saturated. The sounds from the device are audible in some settings if you are close to the unit. Specifications: Size: 19.5 x 9 x 17.5cm Weight: 884g Power consumption: 4 Watts Power Supply: 240V Standard AU Plug Type I Frequency range: 10,000 Hz to 65,000 Hz Output sound pressure: 115 Decibels Coverage: 800 sq metres