Hand-Held Scanners for Personnel|
(Chapter 3 Metal Detection, Continued)
Working with the vendor
If a school is required to go out on bid for one or more hand-held metal detectors, it is recommended that the contract require the following optimal features:
- A variable pitch of alarms that provides more information to the operator using it, i.e., a softer squeal for an innocuous item, like a zipper, and a louder squeal for a bigger, more suspicious item.
- A detector paddle or zone that is at least 10 inches long.
- A signal that indicates the battery is beginning to run low, as opposed to an abrupt termination of operation.
Research Report: The Appropriate and Effective Use of Security Technologies in U.S. Schools