4 значные часы NTP Wi Fi, 4 дюйма, желтые светодиоды, двусторонние (1600410853969)

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Price:136,00 $ - 170,00 $
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Product Overview

Description





Synchronised Wireless Time System
Synchronised by NTP
Wi-Fi Connected
GlobalTime Wi-Fi Clocks connect to a wireless local network and are capable of taking the accurate time from any NTP server. The GlobalTime Wi-Fi clocks come pre-programmed with the web addresses of public internet NTP servers. Each clock can be set and controlled through a user-friendly built-in web interface from any computer or mobile device (such as a tablet or smart phone).

Download link of Brochure & Manual: https://www.ntpclock.com/manuals



Clock Features


• Available with 4” digits, 4 digit display or 6 digit display
Red display standard; Optional Green, Yellow, Amber, displays
• Time is automatically set by Simple Network Time Protocol(SNTP)- no master clock or serial connection required
Operates on existing Wi-Fi Infrastructure- no need of network cable distribution.
• Static IP or DHCP addressing
• 12 or 24 hour display 
• Automatic Daylight Saving Time change (if applicable)
• Adjustable brightness (brilliant, bright, normal, dim, off)
• Capability to receive realtime countdown command
• If connection to NTP server is lost the clocks will continue to run on the built-in time base. When the connection is restored it will synchronize automatically.
• The clock features time loss notification by having a light on on the right lower corner



Optional Features:

There will be additional charge for adding optional features. If you need optional features, please specify when you place order.

(1) The clock can be single sided ( has one display) or double sided ( has two displays), if you need double sided clocks, please specify.
(2) Alarm function. We can add a bell relay into the clock, then you can connect the clock to bell and program the bell.


(3) Temperature/ humidity display is optional. We can add a sensor to the clock, then it can display time, teperature, and or humidity alternately.


Relay
Bell Connector


Time Display
Temperature Display
Humidity Display




Web Interface for Setup




Power Supply and Installation


Powe Supply
The clock has no built-in battery, it can only use a 12 V 2A power adapter with 5.5mm x 2.1mm plug for power supply. If you need to buy power adapter from us, please specify when you place order.

Installation
For single- sided clocks, it's not necessary to use the installation accessories because on the back side there are two holes for hanging the clocks on the wall, but for double- sided clocks, it is necessary to use the installation accessories.
If you need to buy installation accessory please specify when you place order.


Double-sided clock has two LED displays
On the top, the round cover can be removed for installation accessories




FAQ


Question:
Hi from Sweden, I am interest to buy this item, but I don’t know if you can send it to Sweden.
Answer:
Yes, we can send it to Sweden, we have CE, FCC, RoHS, ISO9001. Currently we have sold our NTP clocks and NTP servers to 68 countries or regions over the five continents in the world.
 
Question:
When there is interruption of power supply, will the clock work?
Answer:
The clock doesn’t have a built-in battery, when there is interruption of power supply, it won’t work. But as soon as the clock is connected to power and network, it will display the correct time automatically, no need of manual adjusting.

Question:
When there is interruption of network, is there any indication? And will the clock still display correct time?
Answer:
Normally the clock synchronizes with NTP server every 5 minutes. When there is interruption of network, a small dot will appear on the lower right corner of the LED display and the clock won’t synchronize, so it will be inaccurate slowly, the deviation is about 1 minute per day! When it is connected to network again, it will display correct time and automatically and the dot will disappear.
 
Question:
Hello! Does this clock display 24h? Or is it 12h am/pm only?
Answer:
It can be set to either 12or 24 hour display. You can set on the management software. When it is set 12 hour display, a dot will appear on the left upper corner of the LED display to mean am.
 
Question:
Hello! Does this clock support IPv6?
Answer:
No, the current version only supports IPv4.
 
Question:
Can we set up the time without a NTP server?
Answer:
It does require some NTP server, such as our NTP server (model: GTT100, GTT200, GTT400) or internet based source( internet public NTP server). With that available, it will keep itself accurate and on the money.

Question:
Will you charge for the management software?
Answer:
No. It is free.


1600410853969
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