Phase locked loop (PLL) circuitry
Super high sensitivity with extremely low noise transmission & reception
Stable & quality SMT assembled PCB module
Power & RF LEDs for precise signal monitoring
Convenient squelch control
HSM-X3 & LAV-X3 have electret condenser unit microphones
HSM-X3 headset mics & LAV-X3 lavalier mics have mini XLR connectors
FB-64 have a rechargeable input for battery recharging
Combine any 2 UF series receivers for a 1U rack space, hardware included