Tender For supply of dgms approved, cimfr tested, bis certified audio visual alarm(ava) for conveyor/haulage with dgms approved, bis certified,flp/intrinsically safe power supply. , dgms approved, cimfr tested flp/wp, ip 65 pull cord switch incast iron construction rated upto 30a, 550v (max) with mining typecable gland having compound filling arrangement. , dgms approved, cimfr tested, bis certified signalling bell forconveyor/haulage with dgms approved, bis certified,flp/intrinsically safe power supply.