supply of supply & installation of the ohe power presence/absence indicatorsupply & installation of the ohe power presence/absence indicator,supply & installation of the ohe power presence/absence indicator for inspection sunken pit as per model no. ss402 of m/s samadhan or similar. 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 le ngth 05 meter. qty in each set -01 no. (4) display cum power supply unit with working input voltage 180v to 250 ac, ac qty in each set - 01 no. & display unit should be able to indicate power on/off and sensor f ailure, qty in each set - 01 no. (5) connecting cable 02 with length 05 meter qty in each set - 01 no. [ wa rranty period: 30 months after the date of delivery ] ]