Shock Indicator Labels indicate when a g-force impact can potentially damage products in the transportation chain. Shock Indicators provide a visual indication that hidden damage may have occurred. When used with alert labels, a Shock Indicator Label reduces the incidence of damage by raising awareness that the package is being monitored. (sold in packs of 100 labels) Companion Labels increase the handler’s awareness that the package is being monitored. The companion label is used with Impact-O-Graph Shock Indicator Labels. The label provides instructions upon receiving damaged shipments. (sold in packs of 10 labels) Return Policy: Non-Returnable - These devices ship in active trigger mode