Davtron Digital Voltmeter Model 451

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Part# 10-04558
MFR Model# 451A


Davtron M451 Features:

  • Minimum panel space
  • Light weight
  • Automatic dimming
  • Sunlight readable display
  • Voltage(remote option available)
  • FAA/PMA Approved

Download M451 Brochure

Davtron FAA PMA # PQ1062NM
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


  • Davtron Inc. recommends that you purchase our products through your local avionics shop and have them do your installation. They know how to handle all the log book entries you need for FAA approval.
  • FAA/PMA Approval
  • Beech 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35-33, 35-33A, with STC SA4381WP or SA4193 installed
  • Download FAA 337 Form


  • Range: 8 volts to 32 volts
  • Input current: 150 M.A.
  • Resolution: .1 volt
  • Operating temp: -20°C to +60°C
  • Accuracy: ±1% of full scale
  • Warranty: one year
  • Complete w/cable & connector


Excellent value. Easy to install and looks good when done. Not much more to be said for such a simple gauge. But I needed one and this was exactly what I was looking for. A&P signed off w/o issue.

December 21, 2015


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is this TSO primary instrument?

This does not have a TSO, however it does carry a PMA. Please view the installation section for approved aircraft.

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