supply of automatic air freshener , supply of automatic air freshener dispenser, wall - mountable and battery - operated, suitab le for frequent passenger use in railway coach lavatories and passenger seating areas. the dispenser shall be manufactured from durable, recyclable engineering plastic, with tamper-resistant lockable cover. it shall operate on non aerosol, fuel-cell or equivalent advanced technology, designed to provide continuous and u niform fragrance release for 24 hours a day, with cartridge options for minimum 30/60/90 days life. the uni t shall operate noiselessly, without moving parts, and be compatible with standard aa alkaline batteries. m alodor neutralization system shall be provided using proprietary or equivalent advanced technology. each u nit shall be supplied with one cartridge refill. item should be in original oem packaging.accepted benchmar k: oxy-gen pro/supreme, or equivalent product from other reputed brand of similar technology. note: 01no s sample to be sent to consignee for approval before bulk supply. [ warranty period: 30 months after the date of delivery ] ]