Close the door and turn the key counter-clockwise to the vertical position. To fully engage the combination lock, spin the dial several times in either direction. Specifications and Features Fire Rating: Certified for 60 minutes (1 hour)

Microwave interference (RFI) or a constant heat source. Manual Solution:

The Safeguard SD 103 Manual is not merely a reference document — it is an essential tool for safe, reliable, and compliant operation of the device. Proper use of the manual reduces downtime, prevents misapplication, and extends the life of the safeguard system.