bids are invited for air whistle weather deck unit consisting of diaphragm solenoid valve air filter heater box. , palm push button switches with ip 56 protection for bulkhead mounting , auto fog signal air whistle bulkhead mounted control panel 230v 1ph ac and v dc emergency supply. , fog signal lamp with lens , services of engineers tsp part b para 7 , training , obs , documentation , installation materials like bolts nuts washers cable glands single compression type from branded reputed firm required pipe fittings etc including testing and tuning spare if any. , monthly warranty extension charges for 12 months beyond standard warranty as per tsp , rlc load total quantity : 24