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latest 5 stars 
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Alvin Gee
5 Stars
Thank you so much for have stock available for the general public.
Yesterday on Google Customer Reviews
G A reviewer
5 Stars
Perfect, the part was cheaper here than some competitors but the fast shipping clinched it for me! Would buy again!!!
3 days ago on Google Customer Reviews
G A reviewer
5 Stars
Excellent phone customer service. Good prices. Prompt shipment. Very pleased.
1 week ago on Google Customer Reviews
G A reviewer
5 Stars
Found what I needed, quick check out. Order shipped same day with place order at just before 3pm CDT
1 week ago on Google Customer Reviews
Brian Halter
5 Stars
Called and they personally checked that an item I needed was in inventory. Excellent service and quick turnaround. Will use for all my opener needs.
1 week ago on Google Customer Reviews
MI-A278 Passive Microphone-3~5M Range
$58.57
Passive Microphone (No Power required) • 3.5mm Jack • Metal case • Easy hide • Denoise • Range: 3~5meters
Availability: In stock
SPECIFICATIONS
| Mic quantity | single mi head |
| Frequency response | 20 Hz ~ and 20KHZ |
| Sensitivity | 40db |
| Signal-to-noise ratio | 75 db |
| Directivity | Omni-direction |
| Output impedance | 600 ohm non equilibrium |
| Output signal amplitude | 2.5 Vpp / – 25 db |
| Bearable sound pressure | 120 db SPL (1 KHZ, THD 1%) |
| AGC automatic gain circuit, the lightning protection, power reversal of polarity protection | |
| Current | 20 Ma |
| Pickup range | 10 ~ 100sq m |
| Connect method | 3.5mm jack connected to IP passive camera directly. |
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