... potential customers' attention within a second,our motion sensor box is your choice. Motion sensor voice box1, Power:3pcs AAA 4.5V ... with appropriate software4, Audio Output mode:Internal speaker(Dia 36mm x H5mm),0.5W 8 ohm5, Sensing range:1-1.5m ... below7, ON/OFF switch and Eco-friendly housing/caseThis Motion sensor sound box is very suitable for promotion campaign,campaign tool ...