3M™ Attest™48 Hour Biological Indicator Vial for Steam Sterilization, 1 Case of 400 Armboards System includes: TENS 7000TM device Color:Yellow System includes: TENS 7000TM device One (1) pair of lead wires four self adhesive reusable electrodes 9V battery hard plastic carrying case quick start guide and instruction manual Compliance Meter: stores 60 records up to 999 hours Power Source: 9 volt battery Modes: Burst Modulation Constant MRW SD1 and SD2 Channels: Dual channel for use with two or four electrodes Timer: Variable 5 60 minutes or continuous Shows temperatures ranging from 90 to 100° F Its spore burden provides an extra margin of safety The optimized media helps promote rapid growth of spores