Sigma Mod Master Clock



  • Wire or wireless time distribution.
  • Time distribution and relay programming through DHF radio and NTP.
  • Master clock with programmable circuits, control of clock network, relays and bells, NTP time server.
  • Modular design allowing the addition option cards (2 for the wall model and 4 for the rack version).
  • Quartz oscillator time base that can be synchronised by a ALS, DCF, GPS or NTP antenna.
  • 3 programmable circuits with weekly, holidays or special day modes for the control of bells or other systems such as heating, air conditioning, lighting, alarms, access control
  • Automatic resetting of time distribution after power shortage.
  • Automatic summer/winter changeover. • Programming by PC based software and program upload through Ethernet network

All Master Clocks available at
Brochure download available here


Auto Time Systems
Appley Bridge, Wigan WN6 9DB, UK