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Digital clocks

Indoor digital clocks

Digital clock for displaying time, date and temperature
NDC 160/4 R

Price without VAT: 797.40 €
Price with VAT: 956.88 €

Digital clock for displaying time, date and temperature
NDC 160/6 R

Price without VAT: 963.00 €
Price with VAT: 1,155.60 €

Digital clock accessories

Product Description

NDC series digital clocks are designed to display time, date and temperature in a numerical form. In their design, the maximum emphasis was put on the functional reliability and aesthetic appearance. NDC 57/...m and 100/...m models are suitable especially for the use in architecturally demanding bank interiors, public institutions, companies, etc. As a standard, they are delivered in platinum mat grey surface finish. They can be made on order also in other colours according to a customer's request. Superbright 7-segment LED displays are used as displaying elements. The larger NDC 160/...m, 212/...m types are designed for outdoor use or for industrial conditions. They have double-casing protection with an internal steel frame and an external aluminium one. These types of the NDC series use ultrabright red LEDs with elliptic radiation angle in the horizontal axis, which ensures their good visibility even in sunlight at a sufficient angle.

The level of brightness of NDC series digital clocks is controlled manually or automatically according to the intensity of the surrounding light. A local or remote thermal sensor and GPS receiver (or other time-synchronizing device) can be connected to all types of NDC...m clocks, which allows to achieve a long-term time precision of 1s per 300,000 years without the necessity to adjust time. The user can choose automatic switching from the summer to winter time and back (Daylight Saving Time) and utilize stopwatch and count-up/down features for exact time measurements. A switching contact of a built-in relay is available, activated upon the end of counting down/up or activated according to programmed time intervals, which allows to use the clock for time signalling at schools.The clocks are ready for building into unified time displaying systems - their synchronisation in a network is secured by their connection to the NDC-net (simple 2-wire connection through a standard RS 485 serial interface) and by the user configuration.

The clocks can be pre-programmed for displaying time, date, temperature, as a stopwatch, for counting-up/down and for alternate displaying the above readings and thus to be adjusted for displaying according to individual needs. Moreover, a time shift can be set, which allows to use the clocks in various time zones even with the synchronisation through the GPS. Wireless IR remote control (identical with a TVcontrol) allows to set the time, the date and programming of the clock. If external time synchronization is used (e.g. GPS receiver), the time and date are adjusted automatically.

The clocks are designed for the installation on a wall, NDC 160/...m and 212/...m types are supplied with a tilting wall bracket as a standard.

Parameters of NDC Digital Clocks:

  • Time - Hours:Minutes or Hours:Minutes:Seconds reading, time zone setting, time correction of ±23 hours 59 minutes, automatic Daylight Saving Time option;
  • Date - Day.Month or Day.Month.Year reading (depending on type);
  • Temperature - -99° ÷ -10°, -9.9° ÷ 99.9° or -99°C ÷ -10°C, -9.9°C ÷ 99.9°C reading range, if local or remote thermal sensor is connected;
  • Stopwatch mode - Start/Stop/Freeze/Reset, resolution in hundreths of seconds, automatic decreasing of resolution, when seconds are filled up, control of the stopwatch by IR remote control, by local or by remote close contact;
  • Counter mode - count-up or count-down – user defined counting limit in the range 1s to 99 days, 23 hours, 59 minutes, 59 seconds, automatic adjustment of the reading format, Start/Stop/Resume/Reset, contact of built-in or remote relay is closed, when the counter reaches the limit, control of the counter by IR remote control, by a local or remote close contact;
  • Switch clock mode - user defined 16 switching times of the built-in or remote relay, adjustable relay switch-on state period in the range 0.01 - 99s, setting of switch-on days (weekly calendar Sunday - Saturday);
  • The clock allows alternate display of the above data, while the user can program the duration of their displaying in the range 0 - 60s;
  • The clocks are ready for building into the systems for displaying unified time by their connection to the NDC-net bus (2 wire RS-485 connection);
  • Optional external time synchronisation by means of a synchronisation module connected to the NDC-net bus, e.g. GPS receiver (with the galvanic insulation for an extra fee);
  • Optional connection of local or remote thermal sensor;
  • Time precision - ±30sec/month (autonomous time, in +20°C ÷ +30°C temperature range) or the precision is given by the precision of the synchronisation, if an external synchronisation module is connected (e.g. GPS);
  • Inputs/Outputs - RS-485 interface for the connection to the NDC-net bus (with the galvanic insulation for an extra fee), an input for the connection of a local button (close contact, max. 5m cable length) for controlling the stopwatch/counter (with the galvanic insulation for an extra fee), an input for the connection of a local thermal sensor (max. 5 m), built-in output relay 2A/250VAC, which can be closed for 0.1s – 99s in the counter mode or in the switch clock mode;
  • Automatic (depending on ambient light conditions) or manual brightness setting in 15 levels;
  • Clock programming and setting wirelessly by means of IR remote control up to 20m.

Standard Accessories:

  • Binder cable connector for power supply cable (models NDC 160/...m and 212/...m only);
  • Tilted wall bracket (models NDC 160/...m and 212/...m only);
  • AC adapter 230VAC/12VDC, 0.5A for NDC ... 12DC models.

Optional Accessories:

  • IR remote control for manual setting (range up to 20 m)
  • GPS receiver for time synchronisation
  • Local thermal sensor


Digital clocks are used either as independent clocks or more frequently as a part of clock network controlled by GPS signal receiver, typical examples are airport halls, railway station halls and platforms, production halls, company buildings etc. Digital clocks are also useful in time attendance systems. Countdown function is also very often used, e.g. to count the days/hours/minutes until end of the year, to count remaining days until supermarket is open, to count remaining time to the next cleaning service (abroad), etc.

Datasheets and documentation for download


  1. Catalog datasheet, digital clocks, NDC series (PDF)
  2. User manual - digital clocks NDC (PDF)
  3. GPS Time Synchronization Options (PDF)
  4. GPS Receiver 67 5DC RS232 – Connection Diagram and Installation Instructions
    (setup with one NDC clock) (PDF)
  5. GPS Network Time Server RS485 – Connection Diagram and Installation Instructions
    (setup with one NDC clock) (PDF)
  6. GPS Network Time Server RS485 – Connection Diagram and Installation Instructions
    (setup with several NDC clocks) (PDF)
  7. Digital Clock NDC in Unified Time System – Master Clock Network Time Server
    with 4x RS485 Outputs
    (Connection Diagram – Rack mountable) (PDF)

Digital Clocks e-Shop