Masterclock NTP Digital Clocks
CLKNTD15-DF
CLKNTD15-DF - Double-faced 15-inch variant, for side-wall mount. End-of-life model.
LEGACY · END OF LIFE
This model is no longer in production. We recommend as modern alternative:
View the alternative: CLDNTD12 →For special sizes or double-faced variants, please contact us for a custom configuration.
The CLKNTD15-DF was the double-faced 15-inch variant of the CLKNTD15, designed for flag-mount installation in corridors or wide halls. Retired model. For double-faced installations in this size, Daylight bv reviews with you which combination from the current NTDS range is the right replacement, depending on viewing distance and desired colour.
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
- 90-265 VAC, 50/60 Hz
- IEC AC power connector and cord included
- PoE (Power over Ethernet) option available
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
- IEC 320 AC input
- USB port for configuration
Physical
- Size: 37.85 x 15.2 cm (14.9 x 6 in)
- Weight: 5 kg
- Black powder-coated steel chassis
- Polycarbonate lens
- Ceiling/wall mount bracket provided
- Double-faced configuration
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
- 5-year limited parts and labor warranty
Compliance
- FCC, CE, RoHS, ANSI
Frequently asked questions
Is the CLKNTD15-DF still available?
No, retired. For double-faced NTP displays in medium size we look at the NTDS44-DF or NTDS46-DF variants as pure digital replacements.
Which size is comparable?
The NTDS44-DF (10.2 cm digits) is the logical replacement for medium-sized spaces in terms of visibility. For smaller rooms an NTDS24-DF may suffice. We are happy to calculate the right choice based on your viewing distance.
What if my existing CLKNTD15-DF still works?
A working unit can stay in service. For problems or a planned replacement, ask Daylight bv for an upgrade plan that takes your existing wall mounting and cabling into account.
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.