適合機種：NEC スピークス SP-FA530 SP-FA530 SP-NA640(LS) SP-NA540(LS) SP-NA540W(LS) SP-DA340(LS) SP-DA340(PW) SP-DA340W(LS) SP-DA340W(PW) SP-DA240(PW) SP-DA240W(PW) SP-DA320(S) SP-DA320W(S) SP-DA220(LS) SP-DA220(K) SP-DA220W(LS) SP-DA220W(K) SP-DA120(S) SP-DA120W(S) SP-R100(P) SP-R100(S) SP-R100W SP-R100W(S)