H. R. Kirkland Indicator Category : Other This unit bears no model number, only the brand “H. R. Kirkland,” a company that still manufactures fire alarm system devices. Brand OtherModel UnknownManufacturer H. R. KirklandType Indicator
Simplex 2901-9517 Category : SimplexThis is essentially the AC-powered version of the Simplex 2901-9833.
