This document is the instruction manual of OEM 1B 3½ Digit LCD Voltmeter Module, which introduces the features and characteristics of the product, including 8mm digit height, 3 decimal points, automatic polarity, automatic zero, 200mV full scale reading, very low current consumption, etc.
The OEM 1B is a compact 3% digit LCD voltmeter module designed for integration into medium‑ and high‑volume applications such as personal instrumentation, sensor indicators, and measurement probes. It features an 8 mm digit height, selectable decimal points, auto‑zero, auto‑polarity, and a 200 mV full‑scale reading with low current consumption.
The manual details electrical specifications, pin assignments, scaling options, safety compliance with the Low Voltage Directive, and typical applications. It also includes dimensions, functional block diagram, and guidance for proper installation and use.
| Linearity | 1 count |
|---|---|
| Sample rate | 2.5 samples/sec |
| Operating temperature range | 0 – 50 °C |
| Supply voltage | 7.5 – 14 V |
| Supply current | 150 mA |
The module provides a 200 mV full‑scale reading.
It operates with a supply voltage between 7.5 V and 14 V.
The module must comply with the Low Voltage Directive (LVD 93/68/EEC).
The LCD digits have an 8 mm (0.31 in) height.