CLKNTD15 Analog Digital NTP Clock
The CLKNTD15 was the 15-inch version in Masterclock's retired CLKNTD range, an analogue-digital NTP clock for medium-sized spaces (meeting rooms, foyers, conference halls).
LEGACY
Still supported for software and repairs.
This model is no longer in production. We recommend as modern alternative:
View the alternative: CLDNTD12 →This model has been retired. For new installations in this size range, consult Daylight bv for a replacement strategy, possibly with a combination from the NTDS range or a CLDNTD12 for smaller spaces.
Technical specifications
Standard Features
- Syncs to any NTP source for accurate, traceable time
- Complete flexibility in Daylight Saving Time configurations
- Uses standard Ethernet wiring
- Fully configurable via supplied WinDiscovery software
- Front indicator light provides synchronization status
- Microprocessor-controlled stepper motor with sweeping second hand for quiet operation
- Battery-backed real-time clock chip in case of loss of synchronization or power
Network Compatibility
- Supports DHCPv4 and DHCPv6 for automatic network address, name servers, and time-server configuration
- Internet protocols: TELNET or SSH, SNMP
- IPv4/IPv6 compatible
Configuration
- Configure devices via supplied WinDiscovery software or TELNET or SSH
- Configuration saved to non-volatile memory and survives power losses
- Authenticated network messages prevent unauthorized tampering of clock configuration
Power
- Mains powered: 90-265 VAC, 50/60 Hz - power cord supplied with the plug type for your country
- Mains inlet (IEC) - power cord included
- PoE (Power over Ethernet) option available
Which connector does this unit have?
- RJ45 network socket — with PoE this also carries the power
This unit has an IEC mains inlet; the power cord is supplied with the plug type for your country. The exact connector type is awaiting confirmation from the manufacturer.
Holdover Accuracy
- On loss of power, device reverts to an internal battery-backed real-time clock chip with accuracy of approximately 1 minute per year or under 165 ms per day
Connectors
- Ethernet RJ45
- Mains inlet (IEC)
- USB port for configuration
Physical
- Size: 37.85 x 6.35 cm (14.9 x 2.5 in)
- Weight: 3.18 kg
- Black powder-coated steel chassis
- Polycarbonate lens
- Wall mount bracket provided
Operating Parameters
- Temperature: 0 to 60 °C
- Humidity: up to 90% (non-condensing)
Optional
- 12/24-hour face
- 24-hour face
- Face plate illumination
- Stainless steel case
Warranty
- 1 year Daylight warranty + 4 years extra Masterclock warranty (parts and labour)
Compliance
- FCC, CE, RoHS, ANSI
Frequently asked questions
Is the CLKNTD15 still available?
No, this model has been retired. A direct one-to-one replacement in the same 15-inch analogue-digital format is not available. Ask Daylight bv for a tailored alternative based on your room and viewing distance.
What alternatives are there?
For medium-sized spaces, consider an NTDS44 or NTDS46 (pure digital, 10.2 cm digits) or a combination with a CLDNTD12 if the analogue-digital look remains a requirement. We are happy to compare based on your viewing distance.
What is the expected lifespan of an existing CLKNTD15?
Masterclock devices have a long operational lifetime, often more than ten years under correct operating conditions. In case of failure: contact Daylight bv for diagnosis. In many cases an upgrade to a current model is more attractive than a repair.
Why order from Daylight bv rather than directly from Masterclock?
Daylight bv has been the authorised Masterclock distributor since 2014. You get invoicing in EUR with Belgian VAT, local support in Dutch, French or English, on-site service by prior arrangement and no complications with customs or US imports.