supply of supply, installation, testing & commissioning of ohe power presence/absence indicator for inspection sunken pits , supply and installation of the ohe power presence/absence indicator for inspection sunken p t 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, 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 each set = 01 no. & display unit should be able to indicate power on/off and sensor failure, qty in each set = 01 no.(5) display unit should be able to indicate power on/off and sensor failure , qty. = 01, no. (6) 02 nos. connecting cable of length 05 meter, qty. = 01 set. erection & commissioning of sensor to be done as per clw drawing no. clw/es/3/sk-1/dkae, clw/es/3/sk-2/dkae, clw/es/3/sk-3/dkae [ warra nty period: 30 months after the date of delivery ] ]