The OEM335A is a 3.5 digit, 200mV LCD voltmeter module in the LM201 series, which is powered by a single 5V supply, has a bright red LED display, a 10.16mm digit height, and a selectable decimal point. It supports single-ended or differential input.
The OEM335A is a compact 3.5‑digit LED voltmeter module that operates from a single 5 V DC supply. It features a bright red LED display, selectable decimal point, and both single‑ended and differential inputs. The module includes auto‑zeroing, input polarity indication, and over‑range indication.
The manual details electrical characteristics, pin assignments, connection diagrams, and example circuits for DC voltage, DC current, and AC voltage measurement. It also explains multi‑range configurations and provides ordering information and mechanical dimensions.
| Display type | Bright, red LED |
|---|---|
| Power supply | Single 5 V DC |
| Digit height | 10.16 mm |
| Input range | 0 – 199.9 mV |
| Accuracy | 0.141 % + digits |
| Input impedance | 100 MΩ |
| Power supply current | 180 mA |
| Temperature coefficient | 100 ppm/°C |
| Operating temperature | 0 – 50 °C |
| Storage temperature | -10 – 70 °C |
| Relative humidity | 80 % |
| Pin pitch | 2.54 mm |
| Number of pins | 8 |
| Sampling rate | 2.5 readings/sec |
| Reference voltage | 100 mV |
| Full‑scale input sensitivity | 200 mV |
It requires a single 5 V DC supply.
Over‑range is shown by illuminating a “1” in the most significant digit while blanking the other digits.
Connect the appropriate decimal‑point pin to DPcom.
The input impedance is 100 MΩ.