The Motorola A01KMS9239_C Minitor V Pager meets the Military Standard 810, Procedures 1 for driving rain and is certified UL Intrinsically Safe Division 1, Class I, Group C, D, Class II, Group E, F, G. The A01KMS9239_C has 12 programmable tones with musical options for communicating specific alerts and Tone, Vibrate or Vibrate and then Tone alerting options. The A01KMS9239_C is built rugged and is perfect for any environment where emergencies may arise.