Copyright © 2018. Davtron Inc. All rights reserved.
M301 Features
- FAHRENHEIT OR CELSIUS
- MINIMUM PANEL SPACE
- LIGHT WEIGHT
- AUTOMATIC DIMMING
- MINIATURE REMOTE PROBE
- SUNLIGHT READABLE DISPLAY
- LASER ENGRAVED FACEPLATE
- FAA-PMA APPROVED
300 Series includes the 12ft digital probe. If customer request analog probe, contact distributor. |
301C | O.A.T. CELSIUS (TEMP. PROBE INCLUDED) |
301C-A | 301C WITH 3 PIN CONNECTOR FOR PROBE (TEMP. PROBE INCLUDED) |
301F | O.A.T. FAHRENHEIT (TEMP. PROBE INCLUDED) |
301F-A | 301F WITH 3 PIN CONNECTOR FOR PROBE (TEMP. PROBE INCLUDED) |
301C-GRN | O.A.T. CELSIUS WITH GREEN LED |
301C-WHT | O.A.T. CELSIUS WITH WHITE LED |
301C-A-GRN | 301C WITH 3 PIN CONNECTOR FOR PROBE GREEN LED |
301C-A-WHT | 301C WITH 3 PIN CONNECTOR FOR PROBE WHITE LED |
301F-GRN | O.A.T. FAHRENHEIT GREEN LED |
301F-WHT | O.A.T. FAHRENHEIT WHITE LED |
301F-A-GRN | 301F WITH 3 PIN CONNECTOR FOR PROBE GREEN LED |
301F-A-WHT | 301F WITH 3 PIN CONNECTOR FOR PROBE WHITE LED |
REPLACEMENT PARTS | |
655-PROBE | PROBE-7FT-RB TEMP PROBE 7FT RED/BLK TWISTED (ANALOG) 301,303,307& 655; NOTE: UNITS WITH "D" IN THE SERIAL # USE A DIGITAL PROBE D307PS |
C307PS | PROBE-12FT-WHT-C307PS TEMP PROBE 12FT WHITE COAX (ANALOG) 301,303,307, 655 & 803; NOTE: UNITS WITH "D" IN THE SERIAL # USE A DIGITAL PROBE D307PS |
D307PS | PROBE-12FT-WHT-D TEMP PROBE 12FT WHITE COAX DIGITAL (FOR UNITS WITH "D" IN THE SERIAL #; MODELS 301, 303, 307 & 655) |
655-NUT | NUT FOR TEMP. PROBE C307PS, D307PS AND 655-PROBE (REQUEST ADDITIONAL O RING AND WASHER IF NEEDED) |
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Complete with Digital Probe


Installation Eligibility
- Schweizer Model 269D
- Diamond Aircraft Model DA20-A1
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. If your airframe is not listed on our PMA approval list above for the unit you're installing, you need to complete a FAA 337 form and file with your local FSDO. FAA PMA # PQ1062NM. (View a sample 337 form)



Frequently Asked Questions
Q: My unit has no display, it doesn't work.
A: You probably have a burnt out ½ amp pico fuse. Surface mount unit uses ¾ amp surface mount fuse.
Q: My unit displays +199, what is wrong?
A: You probably have a short in the probe cable.
Q: My unit displays -199, what is wrong?
A: Probe is either bad, open wire, or not connected to unit.
Q: My temp is off, can I calibrate it?
A: With analog probe, you can calibrate temp. On the back circuit board there are two pots, top pot does high temp, boiling point, lower pot calibrates to low temp, ice point for example. Units with "D" in serial # can't be calibrated, call factory for direction.