supply of supply and installation of the ohe power presence/absence indicator , supply and installation of the ohe power presence/absence indicator for inspe ction sunken pit as per model no. ss402 of m/s samadhan or equivalent. each set consists of following items. (1). sensor mount with guard, qty in each set = 01 no. (2). sealed sensor, qt y in each set = 01 no. (3). connecting cable of length 05 meter, qty. in each set = 01no. (4). di splay cum power supply unit with working input voltage 180v to 250v ac, qty in each set = 0 1 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 delivery ] ]