The TEC2 provides telephone entry with the SES advantage. TEC2 series offers 2 line, 4 or 10 line LCD displays easily read in direct sunlight or at night and four capacities: 50, 125, 500 and 1000 to match your requirements. All systems come with 2 relays standard and board level surge suppression at no additional cost. All TEC2 models have a wide variety of options so you can tailor the system to your specific needs, from card access and modem programming to linking units together on a single phone line using an MUI (Model: OPTKMUI).