Sennheiser speech line digital wireless microphone + Receiver (BOTH)

  
The SpeechLine Digital Wireless SL Handheld Set DW-4-US RM from Sennheiser is a wireless microphone system with rackmount kit that includes a handheld transmitter, a stationary receiver, and a MME 865 condenser capsule. It can be used to capture speech in presentations or lectures for meetings, conferences, and more. Featuring bi-directional communication between transmitter and receiver, the SL Handheld Set requires no settings to be adjusted. The automatic frequency and interference management allows convenient and reliable operation. The LC display provides the link name, battery status, and reception quality. Furthermore, there is a mute-slider switch ergonomically position on the transmitter that makes the use of the microphone very convenient. The SL Handheld DW comes with a rechargeable accupack with up to 15 hours of operating time. It is also USB rechargeable and comes with the cable in the box. It provides a global overview of all network-enabled devices, shows all status information, and makes setting adjustments very easy. System Frequency Response 20 Hz to 20 kHz Dynamic Range > 120 dBA Total Harmonic Distortion (THD) Typical 0.1 % Sampling Rates 24-bit/48 kHz Signal-to-Noise Ratio > 90 dBA Encryption AES 256 Frequency Range USA: 1,920 to 1,930 MHz Modulation GFSK with back channel Transmission Method TDMA, space diversity Latency 19 ms Relative Humidity Maximum 95% Temperature Range Operation: 14 to 131°F (-10 to 55°C) Storage: -4 to 158°F (-20 to 70°C) Receiver RF Sensitivity. 120 dBA Total Harmonic Distortion (THD) Typical 0.1% Audio Sampling 24-bit/48 kHz Signal to Noise Ratio > 90 dBA Encryption AES 256 RF Frequency Range USA: 1,920 to 1,930 MHz Modulation GFSK with back channel Transmission Method TDMA, space diversity Latency 19 ms Humidity Maximum 95% Temperature Range Operation: 14 to 131°F (-10 to 55°C) Storage: -4 to 158°F -20 to 70°C RF Output Power adaptive, up to 250 mW (country-specific) Frequency Response Output: 50 Hz to 20 kHz Input Sensitivity Automatic sensitivity adjustment Power Supply Accupack: BA10 (Li-Ion, 3.7 V) Batteries: 2 x AA size battery (1.5 V) Operating Time Accupack: Typical 15 hours Batteries: Typical 10 hours Display LCD Mute Switch Yes.