Table of Contents
100 LED Display Applications for Product Designers | Electronic Instruments (1) #86-100
This is the first electronic-instruments installment in OPTO PLUS LED’s series “100 LED Display Applications for Product Designers”. Each entry analyses publicly available information on products that use LED displays, so that product designers can quickly see what an LED display can achieve in a finished product, and choose the lowest-cost display solution that best fits their product during the design phase.
- 100 LED Display Applications for Product Designers | Home Appliances (1) #1-10
- 100 LED Display Applications for Product Designers | Home Appliances (2) #11-25
- 100 LED Display Applications for Product Designers | Home Appliances (3) #26-35
- 100 LED Display Applications for Product Designers | Consumer Electronics (1) #36-45
- 100 LED Display Applications for Product Designers | Consumer Electronics (2) #46-60
- 100 LED Display Applications for Product Designers | Display Products (1) #61-75
- 100 LED Display Applications for Product Designers | Game Machines (1) #76-85
- 100 LED Display Applications for Product Designers | Electronic Instruments (1) #86-100
LED Display Analysis | Electronic Instruments #86 | SMT Board Loader
- Application:
- Shows the current status of the SMT board loader
- Reference image:

- LED displays used:
- A – Illuminated characters
- A single-digit LED 7-segment display shows the board-loader mode
- C – LED indicators
- Four red and green icon indicators show the SMT board-loader mode
- A – Illuminated characters
- Emitting colour:
- Red, green
LED Display Analysis | Electronic Instruments #87 | Small Portable Bill Counter
- Application:
- Shows the note count
- Reference product page:
- Reference video:
- LED displays used:
- A – Illuminated characters
- A 3-digit LED 7-segment display shows the note count
- A – Illuminated characters
- Emitting colour:
- Red
LED Display Analysis | Electronic Instruments #88 | Commercial Bill Counter
- Application:
- Shows the note count
- Reference product page:
- Reference video:
- Reference video:
- LED displays used:
- A – Illuminated characters
- Eight groups of 3-digit LED 7-segment displays show the note count
- C – LED indicators
- Six green LED lamp indicators show the bill-counter status
- A – Illuminated characters
- Emitting colour:
- Red, green
LED Display Analysis | Electronic Instruments #89 | Continuous Band Sealer
- Application:
- Shows the sealer temperature
- Reference product page:
- Reference video:
- LED displays used:
- A – Illuminated characters
- Two groups of 4-digit LED 7-segment displays show the current sealing temperature
- Emitting colour:
- Red, green
LED Display Analysis | Electronic Instruments #90 | Soldering Iron
- Application:
- Shows the soldering-iron temperature
- Reference product page:
- Reference video:
- LED displays used:
- A – Illuminated characters
- A custom 7-segment display shows the iron temperature and unit
- Emitting colour:
- Blue
LED Display Analysis | Electronic Instruments #91 | DC Power Supply
- Application:
- Shows the current output voltage and current values
- Reference product page:
- Reference video:
- LED displays used:
- A – Illuminated characters
- Two groups of standard 4-inch single-digit THT LED 7-segment displays show the output values
- C – LED indicators
- Six green LED lamp indicators show the operating mode
- Emitting colour:
- Green, yellow
LED Display Analysis | Electronic Instruments #92 | Hardness Tester
- Application:
- Shows the hardness of the test piece and the operating mode
- Reference product page:
- Reference video:
- LED displays used:
- B – Illuminated graphics
- A 12-segment LED bar-graph display shows the current hardness
- C – LED indicators
- Three red LED lamp indicators show the operating mode
- B – Illuminated graphics
- Emitting colour
- Red, orange, green
LED Display Analysis | Electronic Instruments #93 | Rehabilitation Electrotherapy Device
- Application:
- Shows the intensity, frequency and remaining time of the rehabilitation session
- Reference image:

- LED displays used:
- A – Illuminated characters
- Seven groups of 2-digit and one group of 3-digit LED 7-segment displays show the therapy intensity, frequency and remaining time
- A – Illuminated characters
- Emitting colour
- Green
LED Display Analysis | Electronic Instruments #94 | Handheld Air Quality Monitor
- Application:
- Shows PM2.5, formaldehyde and TVOC readings
- Reference product page:
- [Refurbished] large LED panel 3-in-1 air quality monitor (PM2.5 / formaldehyde / TVOC)
- Reference video:
- LED displays used:
- A – Illuminated characters
- Three groups of 4-digit LED 7-segment displays show the PM2.5, formaldehyde and TVOC readings
- A – Illuminated characters
- Emitting colour
- Red
LED Display Analysis | Electronic Instruments #95 | Blood Pressure Monitor
- Application:
- Shows blood pressure readings
- Reference product page:
- HBP-9020 medical tunnel-type blood pressure monitor
- Reference photo:
- LED displays used:
- A – Illuminated characters
- Two groups of 3-digit and one group of 2-digit LED 7-segment displays show blood pressure and pulse
- C – LED indicators
- One blue LED lamp indicator shows whether the posture is correct
- Emitting colour:
- Red, blue
LED Display Analysis | Electronic Instruments #96 | Timer
- Application:
- Shows the timer value and operating mode
- Reference product page:
- Reference video
- LED displays used:
- A – Illuminated characters
- A 2-digit LED 7-segment display shows the timer value
- C – LED indicators
- Three red LED lamp indicators show the operating mode
- Emitting colour:
- Red
LED Display Analysis | Electronic Instruments #97 | Air Flow Sensor
- Application:
- Shows the measured flow and temperature
- Reference product page:
- Product video:
- LED displays used:
- A – Illuminated characters
- A 4-digit LED 7-segment display shows the measured value
- C – LED indicators
- Six green and two yellow LED lamp indicators show the unit and switching status
- Red
- Emitting colour:
- Red, green, yellow
LED Display Analysis | Electronic Instruments #98 | High-Flow Respiratory Therapy Device
- Application:
- Shows temperature, humidity and other readings
- Reference product page:
- Reference video:
- LED displays used:
- A – Illuminated digits
- Three groups of 2-digit LED 7-segment displays show temperature, humidity and other readings
- C – LED indicators
- One white, one green and one red LED lamp indicator show the unit
- Emitting colour:
- Red, green, white
LED Display Analysis | Electronic Instruments #99 | Handheld Pulse Oximeter
- Application:
- Shows SpO2, pulse rate and other readings
- Reference product page:
- Reference video
- LED displays used:
- A – Illuminated digits
- Two groups of 2-digit LED 7-segment displays show SpO2, pulse rate and other readings
- C – LED indicators
- One red LED lamp indicator shows the current status
- Emitting colour:
- Red
LED Display Analysis | Electronic Instruments #100 | Vital Signs Monitor
- Application:
- Shows patient vital signs
- Reference product page:
- Reference video
- LED displays used:
- A – Illuminated digits
- Six groups of 3-digit LED 7-segment displays show the vital signs
- B – Illuminated graphics
- One bar-graph display shows the vital signs
- C – LED indicators
- Seven red/green LED lamp indicators show the current status
- Emitting colour:
- Red, green
Further Reading on LED Packaging and Assembly
Continue with the related articles below to check part selection, circuit design and real application conditions.
- What is THT (Through-Hole Technology)? Component types and assembly explained
- New small white 16-segment LED display | electronica 2022 show special (2)
- Why can a custom LED display replace an LCD? Two market examples
- How much does a custom LED display cost, and how to reduce it?
Quick Spec Reference for Instrument Designers
Why is this here? Instrument projects usually fail on ratings, not on appearance. OPTO PLUS standard parts operate from -40 to +85 degrees C, withstand 5 V reverse voltage, are rated at 20 mA continuous per segment (about 48 mW), and allow a 40 mA peak current at 1/10 duty. Design around the 20 mA continuous rating first, and check every value against the datasheet of the selected part number before layout.


