Powerful ultrasonic repeller created to clear the garden of unwanted pets3 Position settings for small medium or larger size pestsThe motion detector detects movement up to 70ft from the unit which triggers a burst of powerful ultrasound - harlessly scaring the intruders awaySensor detects movement in a 70 x 50ft arcTest button triggers an audible signalSafe & effective - no chemicals or trapsWill not affect people fish or birdsBattery operated (4 D cell batteries - not included) with option to power from 12v AC/DC adaptorIncludes wall/fence brackets and adaptor for use on a rod/pole ....(continued here)