Key facts
- Brand
- ANDERS
- Model
- OEM33
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-07
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Anders OEM33 3.5‑digit LCD Digital Voltmeter User Manual
The OEM33 is a 3.5‑digit LCD digital voltmeter module designed for easy replacement of analogue meters. It offers a 10 mm character height LCD, 200 mV full‑scale sensitivity, automatic zeroing, polarity indication, 11 selectable annunciators and a display‑hold facility. The module includes an A/D converter, LCD, and a plastic housing with dual‑in‑line pin terminals for PCB mounting.
The device can be powered from either 5 V or 9 V supplies (incorrect polarity will destroy the module). Connections are made via dedicated pins for supply, ground, hold, annunciators and decimal‑point selection. Detailed specifications such as input impedance, reference voltage, overload voltage and temperature limits are provided, along with wiring diagrams for both 5 V and 9 V operation and example application circuits for voltage and current measurement.
ANDERS OEM33 specifications
| Resolution | 3.5 digits |
|---|---|
| Full‑scale sensitivity | 200 mV |
| Supply current (9 V) | 500 pA typical |
| Input impedance | 100 MΩ |
| Reference voltage | 100 mV (9 V supply) |
| Overload voltage | 20 V |
| Resolution (minimum step) | 100 µV |
| CMRR | 70 dB |
| Temperature coefficient | 150 ppm/°C |
| Operating temperature range | 0 °C to 50 °C |
| Storage temperature range | -20 °C to 70 °C |
| Panel cut‑out size | 40.5 mm × 22.5 mm |
| Acceptable panel thickness | 0.9 mm to 3.2 mm |
Source: Anders OEM33 3.5‑digit LCD Digital Voltmeter User Manual
All ANDERS OEM33 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What supply voltages can the OEM33 operate on?
The OEM33 can be powered from either a 5 V or a 9 V supply; applying the wrong polarity will destroy the module.
From: Anders OEM33 3.5‑digit LCD Digital Voltmeter User Manual
How does the meter indicate an over‑range condition?
An over‑range is shown by displaying a “1” in the most significant digit of the LCD.
From: Anders OEM33 3.5‑digit LCD Digital Voltmeter User Manual
What supply voltage does the OEM335A require?
It requires a single 5 V DC supply.
From: Anders OEM335A 3.5‑digit LED Voltmeter Module User Manual
How is over‑range indicated on the display?
Over‑range is shown by illuminating a “1” in the most significant digit while blanking the other digits.
From: Anders OEM335A 3.5‑digit LED Voltmeter Module User Manual
What supply voltage does the OEM335A require?
The module is designed for a single 5 V DC supply; using an incorrect supply can damage it.
From: Anders OEM335A 3.5‑digit LED Voltmeter Module User Manual
How is an over‑range condition indicated on the display?
An over‑range is shown by illuminating a “1” in the most significant digit while blanking the other digits.
From: Anders OEM335A 3.5‑digit LED Voltmeter Module User Manual