K & A Wireless, LLC is involved in digital spread spectrum video transmission systems, offering a full line of digital and analog transmitters and receivers. The firm's customers include fire fighters, law enforcement, aerospace and defense, as well security surveillance and homeland defense applications. K & A Wireless LLC manufactures the electronics that give any inspection or surveillance equipment the wireless mobile freedom that the industry calls for. The firm's technology allows for the transmitting and receiving of video and audio via mobile or stationary monitors or recorders. More recently, the firm has developed a pillbox that uses Internet of Things (IoT) technology for pill detection and medical adherence, cognitive radio technologies that improve spectrum usage, and IoT-based Nitrogen Oxide (NOx) sensors designed for monitoring emission problems in Transportation and Smart City spaces.