Which anti-theft device is activated by the removal of bills from a cash register tray?

• A. Money clip
• B. Alarm buzzer
• C. Security sensor
• D. Cash drawer sensor

Answer: (A)

The idea is detecting when cash is moved from the register. The device that fits this scenario is the cash drawer sensor, which is built into or mounted under the drawer to notice when the drawer is opened and cash is removed. When that movement happens, it can trigger an alarm or alert the system to a potential theft.

A money clip is just a personal money holder with no connection to the register or its security system, so it wouldn’t activate anything. An alarm buzzer may sound as a consequence of a trigger, but the actual detector is the cash drawer sensor—the component that notices the removal of bills. A security sensor is a broader term that could refer to many kinds of sensors, but for a cash register, the specific detector is the cash drawer sensor.