Quatech QSC-100 - Manual (Page 7)

1.1 Features
The standard QSC-100 implements each of its communication channels with a
16750 UART and uses standard line driver and receiver components. For improved
performance and industrial-grade reliability.
1.1.1 "IND" Option --- Surge Suppression Upgrade
The "IND" upgrade provides the protection essential for reliable use in an
industrial environment. Each communication line has a surge suppresser capable of
sustaining up to 40A 20us peak transient surges, a clamping voltage of 30V and a peak
energy dissipation of 0.1 Joules.
yes QSC-100IND
no QSC-100
IND Option Part Number
Figure 1 --- QSC-100 Product Series Summary
Quatech QSC-100 User's Manual 5