Sennheiser SL Lavalier Set DW-4-US R Wireless Microphone System

The set includes the bodypack transmitter, stationary receiver and everything to use or install. 
It comes with the MKE 1 condensor lavalier microphone – so not just A lavalier mic, but the best and most unobstrusive one for great presentations with best speech clarity. All sets also come with rechargeable accupacks with up to 15 hrs of operating time. The accupack is also USB rechargeable, the cable is in the box, the USB socket is presumably just a step away from you. The two types of sets are either Rackmount Sets (-R version), which come with everything needed for rack mounting, or Case Sets (-C version), in a transport case – without rackmounts, if you do not want to install the receiver.

Features:

• Automatic frequency and interference management
• Excellent speech intelligibility
• Full, natural sound with low ambient noise
• Automatic frequency and interference management
• Lockable 3.5 mm jack socket
• Secure 256 bit AES encryption

Specifications:

• Frequency response: 20 to 20,000 Hz
• THD, total harmonic distortion: typ. 0.1 %
• Transducer principle: Condensor
• Power consumption: 350 mA
• Pick-up pattern: omni-directional
• Nominal impedance: 1 kΩ
• Signal-to-noise ratio: > 90 dB(A)
• Equivalent noise level: 27 dB
• Maximum sound pressure level (passive): 143 dB
• RF output power: adaptive, up to 250 mW (country-specific)
• Power supply: 12 V DC
• Antenna connector: 2 x reverse SMA
• Current consumption: approx. 240 μA
• Audio output level (balanced): max. -18 dBu, typ. -24 dBu
• Audio output level (unbalanced): max. +6 dBu
• Dynamic range: > 120 dB(A)
• Operating voltage (stand alone): 4,5 - 15 V
• RF sensitivity: < -90 dBm
• Sensitivity in free field: 5 mV/Pa ± 2.5 dB (at 1 kHz)
• Sampling rates: 24 bit/48 kHz
• Connection: Audio Out: XLR 3M Audio Out: 2 x RCA Network: RJ 45
• What's in the box:
  • MKE 1
  • SL Bodypack DW
  • SL Rack Receiver DW
  • BA 30 rechargable battery
  • Case or GA 4 Rackmount Kit and Pouch