At regular intervals, Comtrol Corporation tests a sampling of products under the following conditions:
- The product is kept at -37 degrees Celsius for over 12 hours without any power. The product is then powered up at full operational load. Comtrol monitors the product for proper operation at -37 degrees Celsius for a minimum of one hour.
- Comtrol also tests the product at 74 degrees Celsius for a minimum of 12 hours at full operational load.
