Sensormatic 58Khz Blank Black DR LabelsSensormatic Security Labels 5000 Case Product Description: Sensormatic 58 KHz Blank DR Labels are designed for optimal use on metal and metallic items. RF frequency signals are typically blocked by metal, but the 58 KHz frequency, used by Sensormatic, overcomes this limitation, making these labels ideal for department stores and retailers that sell a wide variety of items, including electronics, power tools, and other metal based products. Key