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.
The 3M Versaflo TR-307N+ PAPR assembly includes a TR-302N+ PAPR unit, TR-371+ filter cover, TR-327 easy clean belt, TR-332 battery, TR-341N battery charger kit, TR-3712N HE filter and a TR-3600 Pre-Filter.

3M 10844, Scotch Vinyl Color Coding Electrical Tape 35, 3/4 in x 66 ft, Yellow, 7000006096
Dynabrade 56195 5" Dia. Non-Vacuum Disc Pad, Hook-Face, Short Nap
Dynabrade 79333 5" Dia. x 7/8" Center Hole, 36 Grit, Ceramic DynaCut Fiber Disc, 25/pack
Dynabrade 61615 Motorhead for Model 61415
Dynabrade 48355 .4 hp Straight-Line Die Grinder, Rear Exhaust, 35,000 RPM, 1/4" Collet
Dynabrade 92100 3" W x 10-11/16" L 40 Grit A/Z DynaCut Belt, 10/pack 
