Profile: Mack Electric Devices, Inc. specializes in the design and manufacturing of precision electrical/electronic instrumentation. We are an ISO 9002 certified company. Our products include temperature monitoring systems, recording systems, ice detection systems, and precision sensing devices. Our temperature monitoring and recording systems are used for critical temperature controlled equipment in hospitals, laboratories, blood banks & pharmaceutical companies. Our Mack Chamber Mapper 100 uses unique user names and passwords to control access to the system. Our TMS-97 is a single point temperature monitor for the blood bank industry.