DIN CLC/TS 50131-2-8 Supplement 1 Alarm systems - Intrusion and hold-up systems - Part 2-8: Intrusion detectors - Shock detectors; Supplement 1: Interpretation Sheet 1; German version CLC/TS 50131-2-8:2012/IS1:2014
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2014