Profile: Brentek International, Inc. provides products that are complementary to the I/O systems. We design and build standard & custom I/O and timing modules to solve difficult application problems. Watchdog timer modules use patented digital or analog timing technology to monitor control system integrity. Packaging provides direct plug-in compatibility with industry standard I/O racks (G4, Classic, SM, M types, and 8-Pin Octal). Fixed timeouts are available from 31 milliseconds to more than one hour. We also supply custom timers. Dry relay (output) modules offer true dry contact switching of AC/DC large and small signals. The input is active low, and accepts TTL, CMOS, and open-collector logic control signals. Our dry contact modules are available with 5-volt, 12-volt, 15-volt, and 24-volt logic operation. Dry contact modules satisfy for the control system's power-down defaults by providing Form 1A and Form 1B contacts. This allows for point-by-point selection of fail-safe I/O points.