supply of supply and installation of the ohe power presence/absence indicator , supply and installation of the ohe power presence/absence indicator for inspection sunken pit as pe r model no. ss402 of m/s samadhan or equivalent. each set consists of following items. (1). sensor mount with g uard, qty in each set = 01 no. (2). sealed sensor, qty in each set = 01 no. (3). connecting cable of length 05 meter, qty. in each set = 01 no. (4). display cum power supply unit with working input voltage 180v to 250v ac, qty in eac h set = 01 no. & display unit should be able to indicate power on/off and sensor failure, qty in each set= 01 no. ( 5). connecting cable 02 with length 05 meter qty in each set= 01 no. [ warranty period: 30 months after the date of del ivery ] ]