| Image | Model | Size | Pattern | Sensitivity | SNR | Protection Feature | Application |
|---|---|---|---|---|---|---|---|
| ECM-B6027AL34IP67-26101 | 6×2.7mm | Omnidirectional | -34dB | 68dB | IP67 waterproof, sealed structure | Range hood / Washing machine |
| ECM-B4015AP40-IP67 | 4×1.5mm | Omnidirectional | -40dB | 60dB | IP67 waterproof, ultra-compact | Bird feeder / Outdoor camera |
| ECM-B6027AL30-L100DFS | 6×2.7mm | Omnidirectional | -30dB | 70dB | Waterproof, wire lead 100mm | Wireless interview / Outdoor |
| ECM-DMP-21F | 31.5×16.2mm | Unidirectional | -60dB | — | Marine-grade waterproof, dynamic | Marine radio / VHF intercom |
| ECM-DM1458TP200 | 14.5×7.5mm | Unidirectional | -65dB | — | Waterproof dynamic, multiple impedance options | Industrial / Vehicle / Marine |
| ECM-F9745AL36-IP67 | 9.7×4.5mm | Omnidirectional | -36dB | 65dB | IP67 waterproof, lavalier style | Waterproof lavalier / Interview |
| ECM-B9745AL30RC-IP67 | 9.7×4.5mm | Omnidirectional | -30dB | 74dB | IP67 waterproof, high SNR | Outdoor camera / Security |
Sealed structure with IP67 protection
Waterproof layer + hydrophobic mesh design. Stainless steel mesh with 20-30μm aperture repels water while maintaining acoustic transparency. IP67 rating ensures dust tight and temporary immersion protection.
IP67 waterproof membrane integration
Electret mics: IP67 membrane adds waterproofing with minor high-frequency attenuation —
suitable for outdoor cameras, bird feeders, and household appliances.
Dynamic mics: IP67 membrane adds waterproofing with no audio quality degradation —
ideal for marine, industrial, and vehicle applications.
Salt fog & corrosion protection
Anti-corrosion coating on mic housing + sealed internal components. Dynamic models specifically designed for marine environments with full salt spray resistance.
Wide temperature & condensation management
Operating range suitable for indoor, outdoor, and marine environments. Micro vent channels prevent condensation buildup. Sealed cavity ensures no moisture ingress.
| Parameter | Requirement | Why It Matters |
|---|---|---|
| Protection Rating | IP67 equivalent with sealed structure | Prevents moisture, condensation, spray, and salt fog ingress |
| Sensitivity | -30dB to -65dB (varies by application) | Balanced sensitivity for different use cases — from outdoor cameras to industrial |
| Polar Pattern | Omnidirectional (general) / Unidirectional (marine/industrial) | Omni for 360° coverage; Uni for focused pickup in noisy environments |
| Mic Type | Electret (general waterproof) / Dynamic (marine/industrial) | Dynamic offers superior durability for extreme environments |
Quick Selection Guide
Choose by your environment — no complex calculations.
Waterproof Testing
Spray test (cleaning/rain simulation) · Condensation test (humidity cycling) · Immersion test
(IP67 equivalent)
Requirement: No acoustic degradation, no seal failure after testing.
Salt Fog Testing
5% NaCl concentration · 35°C · 48 hours continuous exposure
Requirement: No housing corrosion, no internal damage, acoustic specs
maintained.
Temperature & Humidity Cycling
Temperature range per model specifications · 0-95% RH · Extended duration
Requirement: No sensitivity shift, no seal deformation, no moisture ingress.
Connection Reliability
Pull test on wire leads · Aging test under humidity for pin/solder joints
Requirement: No loose connections, no moisture ingress at termination points.
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