features:<br />-100% ， high quality<br />-no-toxic， environment-friendly<br />sare and dorless<br />-20-60khz of repelling ultrasonic frequency<br />-power source: ac180-250hzac90v-250v-60hzv<br />-power:2w<br />-material: abs<br /><br />please note:<br />1. this hine should be installed at 80-120 centimeter awaythe floor. and vertical to the floor and plug to the power socket.<br />2. the installing point should be avoidedcarpet， curtain etc attaching sound material. otherwise， the decrease of the sound pressure will do harm on the helminthes effect.<br /><br />package included:<br />1x pest reject