The STEELMAN PRO 79031 is an individual replacement transmitter module for use with the Bluetooth ChassisEAR Kit. Contained within a durable ABS plastic housing, this module packs a powerful Bluetooth transmitter that takes sounds detected by an attached sound wand or sensor clamp and sends them to a connected device for recording and analysis. Multiple LEDs on the face of the module help identify when the unit is in need of recharging, when it is ready for use and when the module is ready to pair with a compatible Bluetooth device. For easy identification of module during use and setup, it can be fitted with a silicone color boot that is included in either the base kit or from the 78689 replacement boot pack. Compatible with both the 78684 Bluetooth ChassisEAR and 78752 Bluetooth ChassisEAR Lite.