Intruder alarm systems. Specifications for components - Ultrasonic movement detectors Ingestion-build-109673 — the requirements of Directive

— the requirements of Directive 94/9/CE concerning equipment and protective systems intended for use in potentially explosive atmospheres

Movement of the structure may occur due to one or more reasons and recommendations are included to accommodate such dimensional changes

the manufacturers' product information and the manufacturers' maintenance and service instructions will be complied with in a manner that can be proven

BS EN IEC 62660‑1:2019 edition constitutes a technical revision which are as following-

This method is applicable to a concentration range of a mass fraction of −3

Intruder alarm systems. Specifications for components - Ultrasonic movement detectors Ingestion-build-109673 — the requirements of Directive