Tender For supply of set of condition based spares for air dryer , consisting of 03 (three) items as per follows: (a) pressure switch set at sil part no. 09871902, qty/set: 01 no. (b) electroniccontrolmodule sil part no. 098 72401, qty/set: 01 no. (c) humidity indicator, sil part no. 09890701, qty/set: 02 nos. [ warranty period: 30 months after the date of delivery ]