03 689 1374  - all inquiries
Jira New Zealand Ltd
PO Box 6125, Invercargill North 9841, New Zealand
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We service a wide range of public display clocks across the country including historic town centre clocks, impulse clocks and just too many proprietary protocol driven systems to list here.

Town Clocks:

Older standalone mechanical mechanisms can date from the early 1900's but more recent electro-mechanical systems (typically 1, 2, 3 or 4 dial faces), are mostly variants on the common master slave concept where a controller in the base of the tower enables remote slave mechanisms driving the clock hands at the head.  (Click here to see our Gallery of just a few)

Institutional multi-clock systems:

Whilst there are numerous clever and innovative multi-clock systems available operating on POE, IP, WIFI, BLUETOOTH, Impulse, etc. the fact remains that the traditional reliable master/slave wired concept continues to be the option of choice for serious applications such as new buildings and refurbishment contracts. The traditional 2-wire Master + Slave clocks system concept is in common use. Instead of the old clickover minutes impulse concept, it now utilises highly advanced modern digital technology where each clock is a mini-computer capable of self regulation at any time without user intervention.

New systems have to be composed to suit each application and for that reason final prices can only be provided by knowing package requirements..


Sapling 2 wire system






2-Wire 24V System by Sapling of the USA

Shown alongside is a Master Clock 2-wire system inclusive of power converter box and analogue/digital clock options.

The output from the master clock is converted to provide power and data over a single pair circuit to all slave clocks on the system. One converter box will support over 150 analogue clocks and additional expansion units can be added at any point in the system at any time to increase system capacity into the thousands of clocks if required.

Both analogue and digital clocks are supported on the same two wire circuit which loops around all clock locations. Clocks added to the circuit will auto self correct within seconds and the system will update immediately following a power cut and for daylight savings corrections.

2-wire brochure


3-Wire 230V System by Sapling of the USA

The 3-wire 230vac clock system in common institutional and corporate use in NZ is based on an older IBM protocol later sold and marketed in NZ under the Simplex brand. Worldwide there were a number of alternative manufacturers. Sapling offer state of the art modern product that can be used to retrofit these older systems.

Note that 3-wire (Simplex) is not recomended for new installations because its correction protocols are out of date but retrofit direct replacement modern clocks can extend the life of an existing system.

3-wire brochure

WiFi Clocks

These can be hung on a wall to connect without cables to an existing wifi system. They synchronise over the internet to a timeserver to permanently maintain accurate time including auto adjusting for daylight savings changes. The battery fitted to the analogue version lasts for 5-7 years and digital displays which draw more power, have a plugpack power supply.

wifi brochure