Patent attributes
An electronic article surveillance device with an electronics housing and base attaches to an article to be protected. The housing and base have connecting interfaces which act together to attach the housing to the base. The housing has a switch on the underside and the base has an aperture partially covered by a flexible tab that aligns with the switch. The flexible tab normally protrudes away from the bottom surface of the base. When the base is attached to an article, the tab is pushed back into the aperture. When the housing is attached to the base, the switch contacts the tab. If the EAS device is removed from the base without disarming the device, the tab moves out of the aperture and allows the switch to detect the removal. The EAS device then issues an alarm. The flexible tab may a piercing element to pierce plastic wrapping, if present.
