Product Description
The Model 29 contains avalanche diodes, one for each line. All diodes
are returned to a ground stud. The Model 29 is provided with a 2 foot
ground wire and has a male and female DB9 connectors. The 29 supports
RS-232 levels while the 29-1 supports RS-422 levels. The Model 29-1
can also be used for EIA-530 and MIL-STD-188-114.
The Model 29 is a low cost solution to the problem of potential equipment
damage from induced transients on RS-232 com ports of PC 386/486 Pentium
or laptops/notebook pc's.