- Accrescent Engineers is an engineering firm founded in 1999 that specializes in electrical services, industrial automation, control processes, and instrumentation. - The document presents critical alarm monitoring over GSM networks, allowing for immediate notification and remedial action for industries like pharmaceutical, food processing, and oil/gas. - It describes using a PLC, GSM modem, and transmitting antenna to send alarm signals over mobile networks to recipients, along with the benefits of mobility, reduced costs, and safety. Programming is done in IEC languages.