ML1-BPM

Name: ML1-BPM
SKU: 12996
Availability: InStock

Panel Mount, IP67 Weather Proof and Tamper Resistant, Unidirectional Boundary-Type Microphone

Categories: Exterior, Mic Level, Microphones, Microphones and Equipment for Public Transportation and Vehicles, Self-Service Kiosk Microphones and Equipment, Sound Surveillance™

Ultra Low Noise Mic – What’s the Benefit?

Cable Length

Color

Connection Type

Ultra Low Noise Option

Clear

Description

ML1-BPM Panel Mount, Weather Proof, Vandal Resistant Uni-Directional Microphone

The ML1-BPM is a rugged, low-cost, panel-mount boundary microphone designed for security and surveillance applications. Engineered for durability, it is vandal resistant, weather proof, and IP67 rated, making it suitable for both indoor and outdoor installations.

This uni-directional electret microphone is optimized for use with IP cameras that accept microphone-level inputs, with the camera providing power to the ECM cartridge. The ML1-BPM features a 6-foot attached cable with flying lead output for easy connection to IP cameras or devices with terminal blocks.

Built to deliver clear, reliable audio capture even in harsh environments, the ML1-BPM is an ideal choice for security professionals seeking performance, simplicity, and durability in a microphone solution.

Key Features & Specifications

Uni-directional pickup pattern for focused audio capture
Maximum SPL: 120dB
Frequency response: 150Hz–16kHz
Sensitivity: –54dB
Output level: –40dB (mic level)
Power requirement: 2–10VDC
Load resistance: 680–5k Ohms
Signal-to-noise ratio: 60dB
Cable: 6 ft. standard length with flying leads (up to 25 ft. optional)
Housing: Clear matte finish aluminum (optional black or white powder coat)
Operating temperature: –40°C to +85°C
Environmental rating: IP67 weatherproof and vandal resistant
Dimensions: 1.25″ L × 1.00″ W × 0.50″ H
Weight: 0.025 kg
Built-in windscreen for noise reduction

Included

ML1-BPM Microphone
Warning label

Options

Cable lengths up to 25 ft. (add –XX, where XX = number of feet)
Black (-BL) or White (-WT) powder coat finish
Low-noise, high-sensitivity capsule (-LN)

Additional information

Product Type	Microphones
Product Line	ML1
Microphone Type	Mic-Level
Environment	Exterior
Weather Resistant	Yes
Weather Proof	Yes
IP Rating	IP67
Housing	Ruggedized, Covert, Rectangular
Material	Aluminum
Microphone Orientation	Fixed
Pick-Up Direction	Uni-Directional
Form Factor	Small Form Factor
Mount Type	Panel Mount
Mic Frequency Response	150Hz-16kHz
Microphone Sensitivity	-54dB
Ultra Low Noise	Yes

Application

ML1-BPM for Kiosk Intercoms: Installed in self-service kiosks, ATMs, or ticketing machines where a rugged, low-profile microphone is required to withstand public use and vandalism.
ML1-BPM in Prison Visitation Booths: Panel-mounted in correctional facility visitation rooms to provide clear, secure communication while resisting tampering or damage.
ML1-BPM for Drive-Thru Systems: Used in fast food or banking drive-thru panels where weatherproofing and vandal resistance are essential for daily customer interactions.
ML1-BPM in Public Transportation Terminals: Integrated into help stations, ticketing kiosks, or information booths at airports, train stations, and bus depots.
ML1-BPM for Outdoor Emergency Call Boxes: Ideal for SOS stations, blue-light towers, and emergency call points that require reliable audio in harsh weather and high-risk environments.
ML1-BPM in Stadium & Venue Access Points: Installed at controlled access gates or entry kiosks to facilitate communication with security personnel while resisting vandalism.
ML1-BPM for Parking Lot & Garage Intercoms: Mounted in entry/exit stations where durability and weather resistance are critical for 24/7 operation.
ML1-BPM in University Campus Safety Systems: Deployed in campus security panels and information kiosks to ensure reliable, tamper-proof communication.
ML1-BPM for Industrial Control Panels: Used in manufacturing plants or refineries where rugged, weatherproof audio input is required for operator communication.
ML1-BPM in Military & Government Installations: Integrated into secure access kiosks and guard stations requiring low-profile, tamper-resistant audio capture.

Documents

Spec Sheet
Installation Instructions

When selecting a microphone for your application, it’s important to understand the performance differences between Default and Low Noise versions. Whether you’re using an omnidirectional mic for broad area coverage or a directional mic for focused pickup, choosing the right noise profile can greatly impact audio clarity.

🎤 Omnidirectional Microphones: Default vs. Low Noise

Omnidirectional mics capture sound equally from all directions, making them ideal for general-purpose use, surveillance, and open-area coverage.

Feature	Low Noise Omni Mic	Default Omni Mic
Sensitivity	-28 dB	-44 dB
Signal-to-Noise Ratio (SNR)	80 dB	60 dB
Ideal For	Clean, professional-grade audio	Basic installations

Key Differences

The Low Noise version is significantly more sensitive, meaning it picks up softer sounds without requiring high gain.
It also has a much higher SNR, producing clearer audio with less internal hiss or static.

✅ Choose the Low Noise Omni Mic if you’re using the mic in quiet spaces, need better clarity, or want stronger performance at lower gain settings.
❗ Choose the Default Omni Mic if you’re working in a noisy area or operating on a smaller budget where audio perfection is not critical, as the Ultra Low Noise option comes at a small upcharge per unit cost.

📡 Directional Microphones: Default vs. Low Noise

Directional (or uni-directional) mics focus on sound from one direction while minimizing ambient noise from the sides and rear. They’re great for kiosks, intercoms, and focused listening applications.

Feature	Low Noise Directional Mic	Default Directional Mic
Sensitivity	-35 dB	-54 dB
Signal-to-Noise Ratio (SNR)	70 dB	60 dB
Ideal For	Focused, high-clarity listening	Basic directional audio

Key Differences

The Low Noise Directional Mic is much more sensitive, capturing more detail with less gain.
It also produces less self-noise, which is important for environments where you need clear, focused audio.

✅ Choose the Low Noise Directional Mic if your application requires speech clarity, low background noise, or professional-grade sound.
❗ Choose the Default Directional Mic if you’re in a high-noise area or need a cost-effective directional solution.

🧠 Final Thought

Both microphone types perform reliably—but if audio clarity, lower background hiss, or gain efficiency are important in your setup, the Low Noise models offer a significant upgrade. They’re especially well-suited for surveillance systems, interview rooms, kiosk audio, and quiet environments where every detail counts.