supply of sensor for smoke detector suitable for fdu used in three phase locos as per clw specification clw/es/3/0057 enclosed. system sensor smoke detector 2351e, power source corded electric colour white , sensor for smoke detector suitable for fdu used in three phase locos as per clw specification clw/es/3/0057 e nclosed. system sensor smoke detector 2351e, power source corded electric colour white alarm audible, visual operating h umidity 95 percent sensor type: photoelectric operating voltage 8 to 30 v dc test standard en 54 - 7:2000 (amendment 1). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]