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Wireless clock systems

Using a wireless clock system, various different clocks can be synchronised with one or several buildings without cabling.

This runs via a coded time signal from a radio transmitter connected to a master clock. All slave clocks within transmitter range receive this signal and automatically synchronise to the correct time. Should a malfunction or breakdown occur, the slave clocks work on their own time base, even when radio transmittance is temporarily unavailable. The reach of a radio signal is up to 1000 meters outdoors and 100 to 200 meters indoors regardless of the number, structure and thickness of the walls. Digital transmission of the time string data is coded in order to avoid interference with other (radio) systems.

Choice of products

BT-DCF-ANT
Accessories
Downloads: Product sheet   Details

  • To be used for precise time synchronisation of series BT master clocks
  • The DCF antenna receives the time code in amplitudes modulation of the DCF-77 sender in Germany
  • The time code includes information about hours, minutes, day, date and synchronisation of data signals (time of West Europe)
  • Completely automatic summer-/winter time changes and perfect accuracy
  • In general the clock receives the time code after some minutes. In case of difficult reception conditions or weather disturbances (e.g. thunderstorms) the receipt needs up to 24 hours. The daily receipt of the time code is enough to synchronise the master clock (generally during nights the receipt is better).
  • The receipt of the DCF time telegram is free of charges
  • Red LED for visualisation of time code reception

Technical data:

  • Case: Grey weatherproof plastic case
  • Mounting: Turnable wall mounting for indoors or outdoors,
  • including 5 m connection cable
  • Protection class: IP 53
  • Operation: Connection of antenna to master clock via 2-core cable for power
  • supply and data transfer
  • Maximum cable length: 50 m
  • Ambient temperature: -20 °C to +50 °C
  • Dimensions (WxHxD): 75 x 73 x 26 mm
  • Weight: 170 g
Product enquiry via e-mail

BT-NT-N
Accessories
Downloads: Product sheet   Details

  • Accessory for digital clock series BTWL-LCDxNLVx with low voltage movement
  • Accessory for analogue clock series BTWL-xNLVxx with low voltage movement
  • One unit can supply up to 10 digital LCD clocks

Technical data:

  • Input voltage: 100 V AC … 240 V AC
  • Input current: 400 mA
  • Frequency: 47…63 Hz
  • Energy efficiency: 80% at full load
  • Tolerance Output voltage: ±10%
  • DC: 9 V
  • Output current: 1 A
  • Dimensions: 87.5 x 51.5 x 74 mm
  • Weight: 130 g
  • Plug: Europe
  • EMC norms: FCC, CISPR 22, EN 55022,
  • class B, IEC 6100043; IEC 6100046
  • Operating temperature: 0 °C … 40 °C
  • Charging temperature: 40 °C … 70 °C
  • Humidity: 5% … 95% non-condensing
  • Safety standards: Class II SELV at following applications:
  • UL 60950, CSA 950 (cUL),
  • IEC 60950, VDE, CE
Product enquiry via e-mail

BT-NT-N-UP
Accessories
Downloads: Product sheet   Details

  • Accessory for digital clock series BTWL-LCDxNLVx with low voltage movement
  • Accessory for analogue clock series BTWL-xNLVxx with low voltage movement
  • One unit can supply up to 20 digital LCD clocks or up to 50 analogue radio clocks

Technical data:

  • Input voltage: 230 V AC
  • Input current: 150 mA
  • Frequency: 50/60 Hz
  • Energy efficiency: 80% at full load
  • Tolerance Output voltage: ±10%
  • DC: 12 V
  • Output current: 1 A
  • Power rating: 12 W
  • Operating temperature: 0 °C … 40 °C
  • Charging temperature: 40 °C … 70 °C
  • Humidity: 5% … 95% non-condensing
Product enquiry via e-mail

BTWL-HUV
Accessories
Downloads: Product sheet   Details

  • To be used together with a master clock of series BT-xxx-WL
  • For wireless communication with unlimited quantity of analogue and digital slave clocks inside the operation range
  • No impulse signal wiring necessary
  • Automatic adjustment of the wireless system after mains failures
  • Automatic summer-/winter time changes
  • Check-LED’s for power supply and transmitter signal
  • System safety through encoded time telegram (no interferences with other systems)
  • without radio signal all radio slave clocks work with their own quartz time base in the meantime (no interruption)

Technical data:

  • Case: ABS plastic for wall mounting
  • Operation Range: Indoors between 100 and 200 m depending on ambient
  • conditions (for range boost up to 2 pcs. further BTWL-HUV
  • amplifiers can be used)
  • Power supply: 100 … 240 V AC / 50…60 Hz
  • Nominal current: 50 mA
  • Protection class: IP 54
  • Ambient temperature: -20 °C to +50 °C
  • Dimensions ( W x H x D): 115 x 115 x 60 mm
  • Weight: 300 g
Product enquiry via e-mail

BTWL-MELODIE-230VAC
Accessories
Downloads: Product sheet   Details

  • To be used for break-, fire alarm- or similar signalling in schools, industrial factories, official buildings and so on
  • Wireless control via radio transmission from master clock of series BT
  • Efficient, integrated 5 W booster with volume adjustment
  • 3 buttons for individual adjustment:
  • Selection of melody
  • Adjustment of volume
  • Testing mode
  • 16 pre-programmed, stored melodies
  • Two-digit, green LED 7-segment-display of activated melody number
  • Radio channel via slide switches selectable
  • SD card slot for input of customer specific melodies (digital audio files MP3) via SD card (the SD card must be formatted with FAT16), or e.g. storage of an announcement
  • Melody duration depends on file size
  • To be used indoors


Mounting

  • White ABS plastic case for wall mounting indoors


Option

  • BTWL-MELODIE-24VDC Wireless version with 24 V DC power supply

Technical data:

  • Loudspeaker size: Ø 100 mm
  • Sound volume: max. 90 dB/A
  • Protection class: IP 31
  • Power supply: 100 … 240 V AC, 50/60 Hz
  • Power consumption: 6 VA
  • Operating temperature: 0 °C … +50 °C
  • Dimensions (WxHxD): 202 x 150 x 43 mm
  • Weight: 1 kg
Product enquiry via e-mail

BTWL-RELAIS/AP
Accessories
Downloads: Product sheet   Details

  • absolutely autonomous through coded address
  • different relays can work with same address, if they shall execute the same switching commands (e.g. outdoor lighting, break signalization,…)
  • at bad signal reception the relay use its data memory (maximum two hours)
  • Monitoring LED for function-/device status


Mounting

  • Finery mounting onto DIN-rail, to be used indoors only

Technical data:

  • Contact rating (max. 240 V): 1 A inductive load (5 A ohm resistive load)
  • Power supply: 110 … 230 V AC, 50 Hz
  • Current consumption: 10 mA
  • Operating temperature: -20 °C … +70 °C
  • Dimensions (WxHxD): approx. 50 x 90 x 60 mm
  • Weight: approx. 120 g
Product enquiry via e-mail

GPS-ANT-BT
Accessories
Downloads: Product sheet   Details

  • All over the world, time synchronisation can be ensured via a network of 24 satellites part of the GPS system. This synchronisation system has been designed by the American Army to provide the precise time and also give the exact position of an object or individual on the globe. This enables GPS synchronisation to be used without restriction anywhere in the world.
  • The concept is very simple: 24 geostationary satellites send the UTC time signal to the Earth. The GPS antenna receives a message every second (time + date) and decodes it for the master clock. The master clock receiving the UTC message (GMT) must be configurable to adapt the UTC time to local time (time difference and introduction of summer/winter time changeover for the country if necessary). The time setting of receiver clocks is fully automatic. The time precision of the GPS signal is approx. ± 1 ms. If GPS reception is suspended for a certain time, the master clock maintains its internal accuracy (approx. 0.2 sec/day)
  • The GPS antenna is connected to the master clock by a standard 2 pair telephone cable: 2 wires RS485 + 2 power wires. The maximum cable distance between the master clock and the GPS antenna is 200 metres.
  • The GPS antenna must be installed outside or near a window in order to have an unobstructed
  • view of the sky.
  • To be used together with BT series master clocks.
  • The antenna delivers every second the time message ZDA then GGA
  • Horizontal and outdoor installation on the roof or on a mast
  • Possibility to install the antenna behind a window or under a plastic roof
  • Cable is 4 wires section 0.6 mm², a 20 m cable is provided with the antenna
  • Possibility to extend the cable length up to 100 meters (at 15 V DC power supply)
  • Operation:
  • A yellow LED indicates the operation of the antenna.
  • The LED flashes every second when the antenna is synchronised.
  • The LED remains on when the antenna is not synchronised.
  • The LED is off, if the antenna is not supplied with power.
  • The LED is visible from under.

Technical data:

  • Receiver: 12-channel receiver L1 = 1 575 MHz (data standard NMEA 0183)
  • Data transmission: RS485, 4800 bauds, 8 data bits, 1 stop bit, no parity
  • Power supply: 5 to 15 V DC (provided by the system connected)
  • Power consumption: 70 mA at 5 V DC / 30 mA at 15 V DC
  • Case: White ABS casing with swivelling support to point the sky,
  • fixing with 1 screw Ø 4 mm.
  • Operating temperature: -30 °C to +70 °C
  • Storage temperature: -40 °C to +85 °C
  • Dimensions: 73 x 75 x 26 mm
  • Protection class: IP67
  • Norms: EN 60950, EN 61000-6-1, EN 61000-6-3
Product enquiry via e-mail

PW-BT-LCD7
Accessories
Downloads: Product sheet   Details

  • To be used for mounting of one or two digital clocks of series BT-LCD

Product enquiry via e-mail

PW-BT-ST
Accessories
Downloads: Product sheet   Details

  • Mounting bracket, to be used for series BT digital LED clocks
  • Installation notes:
  • Connection cable will be moved through bracket opening
  • Fastening of in delivery included mounting plates as necessary (fig. 4)
  • Fixing of the clocks by use of both fastening screws (fig. 3)
  • Connection of connection cable on terminal of mounting plate(s) according to manual

Product enquiry via e-mail

PW-BT30/40
Accessories
Downloads: Product sheet   Details

  • Mounting bracket for wall- or ceiling for assembling of a double sided clock
  • Suitable for series BT analogue clocks with Ø 30 cm and Ø 40 cm

Product enquiry via e-mail