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The ULM21 is a rugged lavalier microphone with a directional pickup pattern. 

The small size and pickup pattern helps reduce feedback and improve sound quality.

Features

• Back-electret cardioid microphone
• Clothing clip attaches at microphone body to maintain cardioid pattern
• Integrated 6-foot (180cm) cable
• TA4F connector is compatible  with all EV bodypack transmitters
• Use with TXA for wired XLR applications

Specification

Generating Element:   Back Electret Condenser

Polar Pattern:   Cardioid

Open Circuit Sensitivity:   -52 dB (re: 1V/Pa) @ 1 kHz

Impedance:   1000 ohms ± 20% @ 1 kHz

Self Noise:   29 dBA

Frequency Response:  80 Hz ~ 16 kHz

Signal to Noise:   65 dB @ 1 Pa

Standard Operating Voltage:  1.5V

Maximum Input SPL:   120 dB @ 1% THD

Dynamic Range:   91 dB

Cable Length:   40" (1016mm)

Cable Type:   Single Conductor/Shielded

Connector:   TA4F

Capsule Dimensions:   23.6mm x 10.5 mm/.93 in. x .41 in.

Weight:   5 g/.18 oz. (without cable)

Accessories:   Metal Windscreen (Included) ,  RWS-013 Tie Clip (Included)