Trigger unit for shopping cart display

摘要

A shelf mounted display sign designed in particular for supermarkets having product shelves with pricing tracks, the display sign having a mechanical shelf clip connected to a vertical battery canister that has a cap with indicator lights and a vertical sign bracket with a flexible sign having a side edge engaged in the vertical sign bracket, the shelf mounted display sign also including in one embodiment the electronic circuitry and components to function as a triggering device to remotely activate a product promotion or advertisement on a display or a shopping cart proximate the triggering device.