Ebony Mono Tower 8.2 MHzThis new basic tower will detect paper labels and hard tags three feet to either side. It uses the standard eight point two megahertz frequency, which is compatible with checkpoint frequency systems. This tower carries a two year parts warranty, and a five year telephone tech support package. A beautiful jet black aluminum tower goes with most stores' decor. An optional base plate makes it easy to install with no holes in your floor. An optional line