Facilitating US Armed Forces with OTEK Meters

01. Obsolescence Hardened

Obsolescence is best managed when considered at the start of a design. OTEK's patented technology is the result of forward-thinking decades from now. Our instruments built in 1974 still work in facilities today. That's obsolescence hardened!

02. Plug & Play

OTEK provides 100% form, fit, and function obsolescence upgrades for a variety of decommissioned bargraph meters, digital panel meters, controllers, batch counters, process loggers, and bargraph indicators. We work hard so you can Plug & Play!

03. Lifetime Warranty

We design, develop, and manufacture our products in the U.S., deploying state-of-the-art technology and using only the highest quality materials and components. Our proven excellence delivers an unprecedented lifetime warranty.

Our Military Products

Stand the Test of Time

Our Most Popular Military Instrumentation

OTEK supplies digital instrumentation for a variety of military applications and successfully meets the following Military-Specs: MIL-STD-461D, 462D, 704F, 130K, 810F, 889B2 & 1472F; MIL-HDBK-217F & 454A, RTCA-160F.

If you do not see your desired spec above, please contact us. Our technology has the agency to meet a variety of customized specifications.

UPM-L: 6-Digit Counter

The UPM-L is a six-digit alpha-numeric counter/remote display and is available in either a loop, signal, or external power version.

The external powered versions can accommodate 4 relays, isolated DAC and power for the analog output (per channel), include >30 signal conditioners and isolated input power options, as well as Ethernet and flash memory (μSD). Standard factory set color changes are: red: <10, >90%, yellow: <20, >80%, green: >20, <80% of F.S. Use digit 14, option 9 for custom configuration (you can change it with simple commands).

The UPM-L is a versatile microcomputer with controlling capabilities superior to a PLC and inferior to it in cost and size.

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APM: Avionics Panel Meter

OTEK’s Model APM is a four (4) digit green, red, or blue LED indicator that accepts standard avionics power of 5-32VDC and intensity control voltage of 1.5 – 5V 50-440Hz (or DC/Resistance). OTEK’s exclusive powerless technique allows the APM to be loop powered causing a maximum of 5VDC burden to the loop.

The APM only requires 2 wires to operate. The heart of the APM is an ASIC that accepts VDC or mADC and can be scaled (internally) to any value. The unit mounts in a standard avionics 1″ diameter hole with four (4) mounting screws and connects to Power and signal via a “Twist Lock” circular connector (DBC53H-10-6P, Mating Cable End: MS347640 (L or M) -6S).

The APM is fully sealed and it is not affected by differential pressure, liquid spray (NEMA4X), or humidity.

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HI-Q TBS: 6″ ANSI Meter

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NTM-3: 4″ ANSI 

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UPM-3: 4″ ANSI

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NTM-B: 1/8 DIN Vertical

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View Our Full-Line of Digital Meters

Product Features

Best in Class

Reverse Engineering

OTEK specializes in reverse engineering obsolete analog and digital instrumentation.


Plug & Play is the cornerstone philosophy behind all of OTEK’s award-winning products.

Obsolescence Hardened

Instruments designed to stand the test of time to eliminate obsolescence.

Military News & Information

Recaps & More

Raytheon Technologies Closes Albuquerque Facility

U.S. aerospace defense contractor Raytheon, who recently merged with United Technologies, announced plans May 19th to shutter their operations in Albuquerque, New Mexico. The company, now under the new conglomerate Raytheon Technologies Corp, intends to shift...