Built-in Mic โข Cooper Series โข 4-in-1 โข 20M Smart IR
Picture and Sound, In a Directional Bullet
The Dahua DH-HAC-B1A21P-U-A is the bullet with a built-in microphone โ the Cooper-series 2MP bullet that captures audio over the same coaxial cable as the video. For an entrance, service window or covered porch where sound matters, it records both in one directional camera.
Full Cooper spec: 2MP 1080p, 4-in-1 output, 20-metre Smart IR, DWDR and 0.04-lux sensitivity, sealed to IP67 with a 3.6mm lens. Pair with an audio-capable Dahua XVR to record both streams. The audio bullet for entrances and gates.
๐๏ธ Audio at the Entrance
The built-in mic captures conversation at a gate or service window, over the same cable as video.
๐ฏ Directional + Deterrent
A bulletโs clear aim and visible presence suit walls and approaches โ now with sound.
๐ Full Technical Specifications โ DH-HAC-B1A21P-U-A
Model
DH-HAC-B1A21P-U-A (Cooper Series, Audio)
Sensor / Resolution
1/2.7โณ CMOS; 2MP โ 1920ร1080
Audio
Built-in microphone (audio over coax)
Signal Output
4-in-1 switchable: HDCVI / AHD / TVI / CVBS
Night Vision
Smart IR, up to 20m; 0.04 lux
Lens / Image
3.6mm (2.8/6mm opt.); DWDR, 2D DNR, OSD
Protection / Power
IP67; 12V DC
Warranty
2 Years Dahua India
โ Frequently Asked Questions
What records the audio? An audio-capable HD DVR โ the Dahua XVR models on our site support coaxial audio. We verify yours before dispatch.
-U-A vs base -U? The -U-A (this) adds the built-in microphone; the base -U is video-only at a lower price.
Eyeball version with audio? The DH-HAC-T1A21P-U-A โ same audio package in a discreet eyeball.
Legal to record audio? On your own premises with signage itโs generally accepted for security use โ inform staff/visitors where required.
Direct-to-Customer Dispatch โ typically within 24 hours
Compatibility Guidance โ audio-DVR match checked
Remote Usage Guidance โ mobile viewing setup help
๐ ๏ธ Warranty & After-Sales Support
2-Year Dahua India Warranty, subject to BuyCCTVs.com invoice and serial validation; we coordinate the complete RMA process through the authorised service network.
โ ๏ธ Important: Please confirm the current price, exact warranty term and stock on WhatsApp before completing your purchase.
Save -23% on Dahua 2MP HDCVI Audio Bullet Camera | Built-in Mic | Cooper Series | 4-in-1 | 20M Smart IR | IP67 | 2 Year Warranty | DH-HAC-B1A21P-U-A! Only ~โน1,668.00~ โน1,283.00 โ ask us before it's gone.
