Grayson Pro-Tech designs, installs and monitors fire alarm systems alongside intrusion alarms, video surveillance, access control and network cabling. It serves homes, retail, banking, healthcare, transport, education and government clients in North Texas and Southern Oklahoma, and monitors more than 1,100 accounts. The company is based in Denison. It is registered with the Texas State Fire Marshal’s Office as a fire alarm contractor (ACR-1750534) and holds an Oklahoma alarm licence. It was founded in 1985.