Any 2001 can be a DC, it refers to the power the siren uses. 2001s can also be AC, using a rectifier.
"2001-DC" is not a siren model. The only 2001 models are 2001-SRN, 2001-SRNB, and 2001-130.
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Any 2001 can be a DC, it refers to the power the siren uses. 2001s can also be AC, using a rectifier.
"2001-DC" is not a siren model. The only 2001 models are 2001-SRN, 2001-SRNB, and 2001-130.