A-A-52421 Accessory Kit; Warning Device, Demountable, For Emergency VehiclesThis CID covers a 14 volt and 28 volt demountable warning device consisting of a support bar and brackets for rain gutter mounting and gutterless mounting of two rotating warning lights, speaker, electrical harness, electronic siren and public address (P/A) system with microphone for use on security and other emergency vehicles having 12 or 24 volt electrical systems. The accessory kit and its associated hardware is referred to herein as "warning kit".

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A-A-52421A(AT)

Copies are available from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA, 15096-0001 or website https://www.sae.org/.

6.2 Ordering data. Acquisition documents must specify the following:

a. Title, number, and date of this CID.

b. Issue of Department of Defense Index of Specifications and Standards (DODISS) to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 6.1).

c. Type and class of warning kit and PIN (see 1.1 and 6.4).

d. Whether a painted finish is required (see 2.1.1).

e. Marking if other than as specified (see 2.4).

f. Level of preservation, packaging, labeling, and marking (see 4.0).

6.3 Cross-reference data. Warning kits conforming to this CID are interchangeable/substitutable with warning kits conforming to MIL-W-62151(AT).

6.4 Part or identification number (PIN). The PIN to be used for warning kits acquired to this CID is as follows:

A 52421 - XX – X

A = Commercial item designator

52421 = CID number

XX = Type (voltage rating):

14 - 14 Volts DC

28 - 28 Volts DC

X = Class (color of dome):

B - Blue

R - Red

Y - Yellow/Amber

6.5 Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified