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DAV-INS-001-850B 

REV 0   10-27-21 

DAVTRON, INC. 

1.

 

Features 

 

The M850B 2 ¼” clock Front Mount or Internal Mount option provides supplemental flight 
information. 

 
 

• GMT - (Greenwich Mean Time: 24 hour format.) 

• LT - (12 hour or 24 hour format.) 

• FT - Flight Time recorded in hours and minutes or 
           in hours, tenths, and hundreds. 

 

• FT - Flight time alarm with external output. 

• ET - Elapsed time with countdown timer with alarm. 

• CDT -  Count Down Time with alarm 

 

S P E C I F I C A T I O N S 

 

Input Voltage: 14 to 28 Volts (Backlight 
5V, 14V, or 28V 

 

Input Current: .2 Amps. 

 

Battery Type: CR2032. 

 

Keep Alive Current: .00004 Amps. 

 

Illuminated buttons and annunciators for 
night viewing 

 

Bright sunlight readable LED displays with 
automatic display brightness. 

 

Two button control system is natural and 
error free.  Setting operations are 
identical for both alarm and time setting. 

 

Crystal precision time reference,  ±2 
minutes per year accuracy from           
40°C to +85°C. 

 

Weight: 5 ounces MAX. 

 

Warranty: 1 year. 

 

 

 

 

 

 

Summary of Contents for 850B

Page 1: ...P a g e 1 DAV INS 001 850B REV 0 10 27 21 DAVTRON INC INSTALLATION MANUAL MODEL 850B LED DIGITAL CLOCK ...

Page 2: ... 0 10 27 21 DAVTRON INC List of Revisions Rev Description of Changes Approved By Approved Date 0 RELEASED BFT 10 27 21 Table of Contents List of Revisions 2 Important information 3 1 Features 4 2 Overall Dimensions 5 3 Electrical 6 ...

Page 3: ...act information and ship to the following DAVTRON INC ATTN REPAIRS DEPT 427 HILLCREST WAY REDWOOD CITY Emerald Hills CA 94062 650 369 1188 All Davtron products are designed and manufactured in Redwood City CA Installation of the M850B system is supplemental only it is not intended as a replacement for or modification to an existing approved or required system This model is limited to installation ...

Page 4: ... countdown timer with alarm CDT Count Down Time with alarm S P E C I F I C A T I O N S Input Voltage 14 to 28 Volts Backlight 5V 14V or 28V Input Current 2 Amps Battery Type CR2032 Keep Alive Current 00004 Amps Illuminated buttons and annunciators for night viewing Bright sunlight readable LED displays with automatic display brightness Two button control system is natural and error free Setting op...

Page 5: ...ted internal or front mount using a standard 2 panel cutout Installation of the following steps Remove relocate any old instrument Locate an appropriate power source breaker Wire power as needed Mount the unit to the instrument panel with supplied screws Apply power and perform setup see brochure ...

Page 6: ...P a g e 6 DAV INS 001 850B REV 0 10 27 21 DAVTRON INC 3 Electrical ...

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