ETS SM1-LE2 Economy Surface Mount Omni-Directional Microphone

The SM1-LE2 from ETS is a low-cost, high-performance omni-directional microphone designed for fixed location security applications. With a 25-foot pickup pattern in all directions, it features a built-in limiter circuit that automatically lowers the output level during loud sound intervals. The selectable hi-cut and low-cut filters significantly reduce background noise, ensuring clear audio capture. Its durable ABS enclosure allows for surface mounting, and it connects directly to various switchers, mixers, or amplifiers, making it a versatile choice for any security setup.

ETS SM1-LE2 Microphone Features

• Omni-directional Pickup: 25’ pickup pattern captures sound from all directions, ideal for security applications.
• Low Noise Pre-amplifier: Equipped with a low noise MOSFET pre-amplifier for clear audio transmission.
• Wide Frequency Response: 500Hz-13kHz frequency response ensures accurate sound reproduction.
• Selectable Filters: Jumper selectable hi-cut/low-cut filters limit frequency response to 900-6kHz, reducing background noise significantly.
• Volume Range Options: Offers jumper selectable volume range for “Line level” (0db) or “Microphone level” (-30db), providing flexibility for different applications.
• Adjustable Gain: Gain can be adjusted in both volume ranges for optimal sound capture.
• Output Impedance: 100 Ohm unbalanced output allows for easy integration with audio equipment.
• Internal Limiter Circuit: Features a .5 sec response internal peak limiter to prevent distortion during loud intervals.
• Easy Cable Termination: 3 position Euro-style connector simplifies cable termination for quick setups.
• Reverse Polarity Protection: Designed with reverse polarity protection for added reliability.
• Power Requirements: Operates on 12 to 24VDC @ 10mA, making it energy efficient.
• Voltage Regulation and RFI Filtering: On-board voltage regulator and RFI filtering enhance performance and reduce interference.
• High S/N Ratio: More than 60DB signal-to-noise ratio ensures clear audio quality.
• High Sensitivity: Sensitivity rating of –45DB captures even quiet sounds effectively.
• Durable Enclosure: Industrial temperature range of –40 to 105C and ABS enclosure for versatile mounting options.

ETS SM1-LE2 Detailed Specifications