Connect with USB or Bluetooth®. This keyboard has a built-in touchpad and is made of industrial silicone rubber. This fully-sealed keyboard is designed to meet IP67 and NEMA 4X specifications, meaning it is resistant to dirt, dust, water, ice and corrosives. Built with an industrial silicone rubber keypad and a rugged ABS polycarbonate case, the BT-870-TP is easy to clean with disinfectants. The compact design and internal Bluetooth module make the BT-870-TP highly portable. In addition, its red LED back-lighting is ideal for nighttime or ambient-light use.