Items - Item# 1: 48 channels DIGITAL RECORDERS as per specification enclosed in Enclosure-I. Model No. 6180,Item# 1: 48 channels DIGITAL RECORDERS as per specification enclosed in Enclosure-I. Model No. 6180,Item# 2: 18 channels as per specification enclosed in Enclosure-I. Model No. 6100 A,Item# 2: 18 channels as per specification enclosed in Enclosure-I. Model No. 6100 A
