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The 4 Inches WiFi LED Digital Clock supports both DHCP and static IP configurations for seamless network synchronization. It's powered via DC adapter and connected via WiFi.This single-sided display features adjustable 12/24 hour modes and automatic daylight saving time adjustments, with LED color options including red, green, yellow, and amber to suit any environment.
Item No :
SW100Order(MOQ) :
10pcsOEM/ODM :
YesColor :
Red, Green, Yellow, AmberLead Time :
1 weekWeight :
0.7kg
Product categories4" 4-digit Auto Sync WiFi Network NTP Digital Wall Clock HH, MM
A Wall Clock That Gets Its Time From Your Wi-Fi
The SW100 is a single-sided 4-inch LED wall clock that disciplines itself against any NTP time server you point it at — a private server on your LAN, an on-site GPS time source, or a public NTP pool. It joins your existing 2.4GHz wireless network the way a laptop does, so there is no Ethernet run, no PoE switch port, and no master clock controller to buy. One power outlet and Wi-Fi coverage: that's the whole installation.
It shows hours and minutes in large 4-inch digits, readable from up to 50 meters (150 ft). Schools use it to replace drifting battery clocks in classrooms; clinics and offices use it to put identical time on every wall without opening a single wall for cabling. Four LED color options — red, green, amber, yellow — let you match room lighting and viewing distance.
Why Installers Pick the SW100 Over Wired Clocks
Retrofit-friendly, one wire only. Power is the only cable it needs — a DC adapter with a standard 5.5 × 2.1 mm plug, which we supply or you can source locally. Mount it on any wall inside Wi-Fi coverage and it's on the network in minutes.
Time that doesn't drift, with backup. The clock holds up to 5 SNTP server addresses. If the primary server is unreachable, it fails over to the next automatically. Synchronization accuracy is approximately ±40 milliseconds, and daylight saving time transitions happen on their own.
Readable where it matters. 4-inch digits remain legible at 50 m. Brightness adjusts to the room, so the display stays comfortable in a dim clinic corridor or a bright workshop.
More than HH:MM. A real-time countdown mode supports exams, meetings, and production intervals; an optional bell relay can drive school bells, and temperature or humidity display is available as a hardware option.
Zero software cost. Configuration and management run through the web interface or our free management software — no license, no subscription.
SW100 Technical Specification
| Network | |
| Protocol Supported | NTP, HTTP |
| NTP Protocol Modes | C/S mode |
| Transport Protocol | TCP/IP |
| IP Addressing | Static IP address or DHCP |
| Device management | web or Free software |
| WiFi Frequency | 2.4GHz |
| Supports | IEEE 802.11 b/g/n |
| Encryption | WEP/ WPA-PSK/ WPA2-PSK |
| Receiving sensitivity | 802.11b:-86d8m(11Mbps); 802.11g:-71d8m(54Mbps) |
| General | |
| Operating Temperature | -10℃ to 60℃ |
| Operating Humidity | 90% maximum, non-condensing |
| Digit Size | 4 inches |
| Viewing Distance | 150 feet (50 meters) |
| Accuracy | approximately ±40 milliseconds |
| Mounting Option | Pendant, Cantilever, Wall, Surface |
| Time Format | 12 or 24 hour display |
| Material | Black |
| Color | Red, Green, Yellow, Amber optional |
| LED Color | Red |
| Dimension | 30.2cm*15.7cm*5.7cm |
| Weight | 0.7KG |
| OEM/ODM | Yes |
| Warranty | 1 year |
| Compliance | |
| Certificate | CE, FCC, RoHS |
Application Scenario
FAQS
Q: Does the clock require NTP Server?
A: Yes,it will need a private or publick server to ensure uniform time source.
Q: How is the WiFI digital clock powered?
A: It's powered through a 5.5mm x 2.1mm plug DC adapter, 12V DC for red/amber/yellow clock, 18V DC for green clock.
Q: What information can the clock display?
A: It displays hours and minutes.
Q: Does the clock support 12/24-hour formats and Daylight Saving Time?
A: Yes. Both 12/24-hour modes and DST adjustment are supported.
Q: What network settings are available?
A: The clock supports DHCP or Static IP and can connect to up to 5 SNTP servers for redundancy.
Q: What extra function is optional?
A: The belling, temperature or humidity display is optional in hardware.Q: Does the clock require a master clock to keep accurate time?
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