Pro Wireless In-Ear Monitor Kit includes a wireless transmitter, 3 wireless bodypack receivers, 3 battery pack and one charger. Include a 1/4 wave antenna, a power supply. Wireless Transmitter (1pcs) Performance Transmission Range – 90 m RF Output Power – 10, 20, 30 mW RF Output Impedance – 50 Ohms (typical) Audio Input Connector Type – 1/4” TRS (6.35 mm) Polarity – Tip positive with respect to ring Configuration – Electronically balanced Impedance – 40 kOhms (actual) Nominal Input Level – Switchable, +4 dBu, -10 dBV Maximum Input Level - +4 dBu: +22 dBu; -10 dBV: +12.2 dBu Pin Assignments – Tip=hot, Ring=cold, Sleeve=ground Phantom Power Protection – Up to 60 VDC Audio Output Connector Types – 1/4” TRS (6.35 mm) Configuration – Electronically balanced Impedance – Connected directly to inputs General Antenna – 1/4 wave, detachable Power Requirement – 12 to 15 VDC, 260 mA maximum Wireless Bodypack Receiver (3pcs) RF Sensitivity – Active: 2.2 μV (at 20 dB SINAD) Image Rejection - > 90 dB Adjacent Channel Rejection - > 60 dB Intermodulation Attenuation - > 50 dB Blocking - > 60 dB Audio Output Power-80mW per output Minimum Load Impedance – 16 Ohms Headphone Output – 1.8” (3.5 mm), stereo Continuous Battery Life – 4 to 5.5 hours, AA batteries Dual Docking Recharging Station (1 Pcs) equivalent SBC200 Fits P3RA, P9R, P10R, UR5, ULX-D and QLX-D series For two Li-Ion batteries and/or hand-held or pocket transmitters Can be linked together Includes power supply for up to 4 units Battery pack (3 Pcs): Rechargeable Lithium-ion Battery (4.2V/1240mAh) Equivalent to SB900B