EN 60950-1, IEC 60950-1

4 data line advanced level surge protector for RS422/485, -40 to 85°C, 5V clamping voltage

4 data line advanced level surge protector for RS-232, -40 to 85°C, 15V clamping voltage

4 data line entry level surge protector for RS-422/485, -40 to 85°C, 5V clamping voltage

7 data line entry level surge protector for RS-232 , -40 to 85°C, 15V clamping voltage