This is a Shure SLX professional double wireless microphone kit with the following included (and not included):2 Shure SLX4 wireless mic receivers (mounted together with rack ears to fit 19" rack)1 Shure SLX2/SM58 handheld microphone2 Shure SLX1 transmitters (with unoriginal lapel/lavalier microphones included)4 rack ears (2 already mounted)1 antenna bulkhead connector kit (already mounted)1 230V AC-DC Adaptors (2 is needed for operating both receivers simultaniously)2 Shure 90B8977 hardware kit for using the receivers as standalone units Notes:The wireless kit uses 800.200 - 819.800MHz R5 frequencies. The kit is tested working perfectly. The kit has no original paperbox included, but will be carefully wrapped. Additional information:SLX WIRELESS SYSTEM SPECIFICATIONS
SPECIFICATIONS
System Frequency Range and Transmitter Output Level
NOTE: This Radio apparatus may be capable of operating on some frequencies not authorized in your region.  Please contact your national authority to obtain information on authorized frequencies for wireless microphone products in your region. Operating Range Under Typical Conditions 100m (300 ft.) Note: actual range depends on RF signal absorption, reflection, and interference Audio Frequency Response (+/– 2 dB) Minimum: 45 Hz Maximum: 15 kHz (Overall system frequency depends on microphone element.) Total Harmonic Distortion (ref. +/– 38 kHz deviation, 1 kHz tone) 0.5%, typical Dynamic Range >100 dB A-weighted Operating Temperature Range –18°C (0°F) to +50°C (+122°F) Note: battery characteristics may limit this range Transmitter Audio Polarity Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low impedance output) and the tip of the high impedance 1/4-inch output. SLX1 Bodypack Transmitter Audio Input Level -10 dBV maximum at mic gain position +10 dBV maximum at 0 dB gain position +20 dBV maximum at -10 dB gain position Gain Adjustment Range 30dB Input Impedance 1 MΩ RF Transmitter Output 30 mW maximum (dependent on applicable country regulations) Dimensions 108 mm H x 64 mm W x 19 mm D (4.25 x 2.50 x 0.75 in.)
Weight 81 grams (3 oz.) without batteries Housing Molded ABS case Power Requirements 2 “AA” size alkaline or rechargeable batteries Battery Life >8 hours (alkaline)SLX2 Handheld Transmitter Audio Input Level +2 dBV maximum at -10dB position -8 dBV maximum at 0dB position Gain Adjustment Range 10dB RF Transmitter Output 30 mW maximum (dependent on applicable country regulations) Dimensions (including SM58 cartridge) 254 mm x 51 mm dia. (10 x 2 in.) Weight 290 grams (10.2 oz.) without batteries Housing Molded PC/ABS handle and battery cup Power Requirements 2 “AA” size alkaline or rechargeable batteries Battery Life >8 hours (alkaline) SLX4 Receiver Dimensions 42 mm H x 197 mm W x 134 mm D (1.65 x 7.76 x 5.28 in.) Weight 816 g (1 lb. 13 oz.) Housing Galvanized steel Audio Output Level (ref. +/– 38 kHz deviation with 1 kHz tone) XLR connector (into 600 Ω load): –13 dBV 1/4 inch connector (into 3000 Ω load): –2 dBV Output Impedance XLR connector: 200 Ω 1/4 inch connector: 1kΩ XLR output Impedance balanced Pin 1: Ground Pin 2: Audio Pin 3: No signal Sensitivity –105 dBm for 12 dB SINAD, typical Image Rejection >70 dB, typical Power Requirements 12–18 Vdc at 150 mA, supplied by external power supply