D-Link DCS-942L User Manual

64D-Link DCS-942L User Manual
Appendix A - Wireless Basics
What is Wireless?
Wireless or WiFi technology is another way of connecting your computer to the network without using wires. WiFi uses radio frequency
to connect wirelessly, so you have the freedom to connect computers anywhere in your home or oce network.
Why D-Link Wireless?
D-Link is the worldwide leader and award winning designer, developer, and manufacturer of networking products. D-Link delivers the
performance you need at a price you can aord. D-Link has all the products you need to build your network.
How does wireless work?
Wireless works similar to how cordless phone work, through radio signals to transmit data from one point A to point B. But wireless
technology has restrictions as to how you can access the network. You must be within the wireless network range area to be able to
connect your computer. There are two dierent types of wireless networks Wireless Local Area Network (WLAN), and Wireless Personal
Area Network (WPAN).
Wireless Local Area Network (WLAN)
In a wireless local area network, a device called an Access Point (AP) connects computers to the network. The access point has a small
antenna attached to it, which allows it to transmit data back and forth over radio signals. With an indoor access point as seen in the
picture, the signal can travel up to 300 feet. With an outdoor access point the signal can reach out up to 30 miles to serve places like

D-Link DCS-942L Specifications

General

Total megapixels	0.3 MP
Maximum resolution	640 x 480 pixels
Supported video modes	-
Video formats supported	H.264, M-JPEG, MPEG4
Power LED	Yes
Networking features	Ethernet, Fast Ethernet, 802.11b/g/n WLAN
Still image resolution(s)	640 x 480
Sensor type	CMOS
Optical sensor size	1/5 \
Optical zoom	- x
Focal length range	0 - 3.15 mm
White balance	Auto
Camera shutter type	Electronic
Minimum illumination	1 lx
Form factor	Cube
Product color	White
Certification	FCC B, IC, C-Tick, CE
Placement supported	Indoor
Connectivity technology	Wireless
Ethernet LAN (RJ-45) ports	1
Windows operating systems supported	Windows 7 Home Premium, Windows Vista Home Premium, Windows XP Home
AC input voltage	100-240 V
DC output current	1.2 A
DC output voltage	+5V
AC input frequency	50 - 60 Hz
Power over Ethernet (PoE)	No
Power consumption (typical)	5.5 W
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	20 - 80 %
LED type	IR
Night vision distance	5 m
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Supported network protocols	IPV4, ARP, TCP, UDP, ICMP, DHCP Client, NTP Client (D-Link), DNS Client, DDNS Client (DynDNS & D-Link) SMTP Client, FTP Client, HTTP Server, PPPoE, UPnP, LLTD
Security algorithms	WEP, WPA, WPA2
Flash memory	16 MB
Internal memory	128 MB

Weight and Dimensions

Depth	60 mm
Width	34.85 mm
Height	96 mm
Weight	78.1 g