Like the HKS, the 3M™ Versaflo™ TR-300N HKL is a complete, ready-to-use HE PAPR system with a medium-to-large head cover. Suggested industries include: pharmaceutical and Healthcare. Provides protection against particulates. Two types of alarms - one audible and one visual - alert user to either a low battery or low flow, such a when a particle filter is fully loaded. LED lights on the battery indicate its charge status on and off the charger. Versaflo™ PAPR Kit, Healthcare, Series: TR-300+, TR-3712N Filters and Cartridges, Belt Mounting, Rechargeable Lithium-Ion Battery, Specifications Met: NIOSH Approved, Beige/Magenta