Model SN-AHD21824LM SN-AHD21832LM
System operating system embedded linux
system resources Simultaneous multi-channel real-time recording, playback, network operation, USB backup
interface user interface support 16-bit true color graphical menu interface and mouse operation
preview screen 1/4/8/9/16/24/32 (under analog mode)
video vdieo standards PAL (625line, 50f/s)；NTSC (525line, 60f/s)
vdieo compression H.264(High Profile)
display quality VGA, HDMI: HD(max.1920*1080)
play quality 720P/D1/HD1/CIF/QCIF
encode capacity 24ch*720P8 32ch*720P (12FPS)
decode capacity 8ch*720P 8ch*720P (12FPS)
hybrid mode AHD: 24*720P AHD: 32*720P
HVR: 4*720P (AHD)+4*720P (IP) HVR: 4*720P (AHD)+4*720P (IP)
NVR: 4*1080P/1*1080P+8*720P NVR: 4*1080P/1*1080P+8*720P
motion detect Zones: 192 (16*12)detection zones,sensitivity: multi-level sensitivity (Only local channels)
audio audio compression G.711A
bidrectional talk supported
Record&playback record mode manual>alarm>motion detection>timing
local playback 1~9 ch playback, Under analog mode 24*720P, up to 1~9 ch playback, Under analog mode 32*720P, up to 8 ch playback
search mode Time/calendar/event/channel search
Storage&backup space occupation video: CIF: 4~5G/ day*channel, D1: 8~10G/ day*channel；960H: 12~20G/ day*channel
720P: 20G~30G/ day*channel；1080P: ~40G/ day*channel；audio: 691.2M/ day*channel
record storage HDD&Network
backup mode Network backup, USB HDD, USB writer, SATA writer
interface video input 24ch BNC(1.0Vp-p,75Ω) 32ch BNC(1.0Vp-p,75Ω)
video output 2ch BNC(1.0Vp-p,75Ω), 1ch VGA, 1ch HDMI 2ch BNC(1.0Vp-p,75Ω), 1ch VGA, 1ch HDMI
Loop-through output N/A
audio input 16ch RCA(200-2800mV,30KΩ) 16ch RCA(200-2800mV,30KΩ)
audio output 1ch RCA(200-3000mV,5KΩ)
alarm input 8ch
alarm output 1ch
net interface RJ45 10M/100M
PTZ control One RS485, one RS232；support multiple PTZ protocols
usb 2 USB ports
hard disk 8 SATA ports,(max. 6T per one)
Wireless port 3G, WIFI(expand via USB)
Others Power supply 12V/5A