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.

Dynabrade 79493 4-1/4" Dia. x 2" W x 5/8"-11 Center Thread, Coarse, DynaBrite Surface Conditioned Flap Roll
Dynabrade 21485 ND3217, Upper Motor Bearing Plate
Dynabrade 94588 Flange Adapter
Dynabrade 92234 1/8" W x 18" L 320 Grit A/O DynaCut Belt, 50/pack
Dynabrade 79149 1/2" W x 24" L 80 Grit Ceramic DynaCut Belts, 50/pack
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
Dynabrade 90434 1/2" W x 24" L Medium NWN DynaBrite Premium Belts, 10/pack
Dynabrade 95676 1/4" Female Coupler with 1/4" Male Plug Assembly
Dynabrade 93172 4" Dia. X 1/4" Dia. Shank, 320 Grit, A/O, Spindle-Mount Sanding Star
Dynabrade 91092 2" Dia. x 2" W, 120 Grit, Z/A DynaCut Band, 10/pack
Dynabrade 78739 5/16" x 5/8"- B53 DynaFire A/O Vitrified Mounted Point, 5/pack
Dynabrade 79008 1/4" W x 12" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 79821 3" 320 Grit Dynacut Extreme Orange Film Non Vac Hook Face Disc, 50 per box
Dynabrade 92201 1-1/2" W x 30" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 56315 3" x 4-1/4" Non-Vacuum Dynabug II Disc Pad, Hook-Face, Short Nap
Dynabrade 82576 1/4" W x 24" L 80 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 78116 3/4" W x 34" L Medium NWN DynaBrite Belt, 10/pack 
