Duo Pro Pest Repeller Features: Environmentally safe, no toxic chemicals, sprays, powers or messy traps Harmless to humans and most household pets Exclusive switch for DUO, TRANS, ULTRA, TEST mode setting Stop pests from producing any possible immunity Effective in controlling mice, rats, roaches, fleas, spiders, ants, martens,…, etc. Built-in LED indicators to confirm proper operation Works all day, energy efficient Specifications: Dimensions: 119 x 98 x 98 mm Weight: 180g Power supply: AC adapter, 100 – 120VAC; 200 – 240VAC Output: 9VDC 200mA Frequency range: from 25,000 Hz to 65,000 Hz Effective range up to 5000 – 6000 sq. ft. Emission angle 260º