HIS-07 Application Fire detection systems SCOPE: This specification sheet is forionization smoke chamber model HIS-07 (radiation source-0.5microcurie Am-241,2 chambers with a source, made in compliancewith UL 217, EN-54-7) for applications to smoke detectors. Radiatioon source: Radioactivity;Nuclide ;americium 241Ave.33.3 KBq. =0.9μCI(29K~37KBq) Operational ...