Mark Miller Memorial Scholarship Fund

SMT Services

M.C. Miller now offers Surface Mount services. We can build PCB assemblies to your specifications in small to medium runs for both production and prototyping. Visit smt.mcmiller.com for more information or to request a quote.

G1 Owners

Do you own an older G1? Tired of waiting for the OEM GPS unit to sync with satellites? M.C. Miller now offers a GPS upgrade that decreases satellite synchronization time to under 29 seconds from a cold start. Call us for more details.
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Remote Monitoring

Miller Sentinel

Current Interrupter Companion
U.S. Patent No. 7,901,456
Sentinel brochure
Cat. #1100
Price  failed*
  • Reports the status of your rectifier/current interrupter system and alerts you during a survey , in near real-time (via text messages). If your interrupter fails or the output of the rectifier goes out of range during the survey.
  • Eliminates the time and expense associated with having to drive around to each rectifier to check on rectifier/interrupter status during the survey process.
  • Selectable rectifier output voltage and "current" ranges:
    Voltage ranges - 60V and 400V
    Current ranges - 8mV, 60 mV and 600mV
    (shunt voltage ranges)
  • Unit includes all cables necessary for operation
    1. Sensor Cable
    2. Serial Communications Cable
    3. Serial to USB Converter Cable

Miller Sentinel with current and voltage sensor cable

Features and Benefits:

  • On-board processing and display of initial rectifier voltage and current values, including reference level determination of interrupted (switched) current.
  • Generation of initial report for confirmation of rectifier and current interrupter operational status, as well as communication system status - initial status report received as text message in the field.
  • Continuous monitoring of interrupted rectifier current, and, alarm generation should a current interrupter fail to operate properly during a survey (on-board detection of switching status changes).
  • Continuous monitoring of rectifier output levels (both voltage and current), and, alarm generation should a rectifier fail to operate properly during a survey (on-board detection of outputs moving outside of user-defined "acceptable" ranges)
  • Scheduled generation (and storage) of system status reports (user-defined frequency of reporting) - creates a permanent record of rectifier/current interrupter system operational status during a survey (for audit purposes, for example).
  • Near real-time alarm message receipt by field personnel via SMS text messaging - either Cellular phones or Satellite phones can be used by field personnel. In the case of Satellite phones, the entire system is satellite-based and, therefore, independent of Cellular coverage.
Managed Message Service
Programmable Settings to Optimize Performance
* Price does not include costs associated with text messaging services.
Additional costs include :
  • Activation Fee: $45.00
  • Monthly Service Fee : $30.00
  • Message Overage Fee: $0.25 per message
Monthly service fee includes 100 messages from the Sentinel. Additional messages are charged as listed above.
Does not include any charges incurred with your cellular or satellite phone service provider.