Brand Name: Electro-Voice
Model Number: PC Boundary Satellite
Descriptions:
The PC Boundary Satellite is a low-profile area microphone that can be used on any surface and is designed to integrate most Electro-Voice and Telex wireless bodypack transmitters. Featuring the identical polar pattern, filter, and mute-switch functionality as its wired counterpart, it is ideal for any wireless installation requiring premium-grade area coverage. (Note that the R300 bodypack transmitter will not work with this microphone.)
Features:
Accepts EV (REV, RE2, RE2PRO) and Telex (FMR or SAFE1000) bodypack transmitters 
Easy switching between omni, cardioid, supercardioid, or figure “8” polar patterns
Versatility for different acoustic environments
Easy-to-use mute switch, programmable for either latching on/off or momentary operation