Master Clocks - MTC 600

The MTC series are microprocessor-based Master Clocks designed to provide accurate, trouble-free synchronization of secondary clocks while at the same time offering programmable control circuits for automating building operations. They are suitable for many types of buildings: schools, hospitals, industrial plants, and office buildings. MTC series clocks are a cost competitive solution to your building time control problems, with state of the art features. The PC-400 Programmable Clock also provides control circuits, but without the secondary clock controls. 


  • Simple, user friendly programming
  • Compatible with both Analog and Digital clocks
  • 1 day, 5 day, 7 day programming
  • Single event or bulk memory erase
  • 10 year rated battery backup
  • Output circuit status indicators
  • Duration programming for output circuits
  • Program security access code
  • Output circuit ON-OFF-AUTO switches
  • Simple chronological program review
  • Automatic leap year update
  • Automatic daylight savings time correction
  • On-Off programming for output circuits
  • 12 or 24 hour time display format
  • Manual secondary clock controls
  • Automatic correction of Wired Synchronous secondary clocks
  • 10 programmable holiday periods

Optional Features

  • Synchronize with computer time (RS232)
  • Program from computer terminal (RS232)
  • Four selectable output circuit programs
  • Automatic correction of Minute Impulse clocks
  • Synchronization Relay kit for extra control functions
  • Expanded memory (2666 events)
  •  Serial output for digital secondary clocks (RS485)


  • Input Voltage: 120VAC
  • Input Voltage Frequency: 60 Hz (50 Hz Optional)
  • Standby Power: Lithium Energy Cell, 10-Year Rated
  • Power Consumption: 15 Watts Max
  • Power Protection: Fused Input and Outputs
  • Output Circuit Contacts: SPDT 10A @ 120VAC Resistive
  • SWP Contact: 10A @ 120VAC Resistive
  • Impulse Clock Power: 24VDC, 4A (optional)
  • Program Capacity: 650 Events Per Each of 4 Programs
  • Optional Program Capacity: 2666 Events with Expanded Memory Option
  • Holiday Schedules: 10 Holidays, Any Duration
  • Clock Operating Accuracy: Line Synchronous
  • Calendar: 100 Year Accuracy
  • Impulse Clock: 2 or 3 Wire, 58th or 59th Minute Reference
  • Operating Temperature: 0 to 60°C
  • Weight: 19.25 lbs
  • Dimensions: 14.5”H x 12.3”W x 5.0”D