KL-M4112 is an analog acquisition module that integrates acquisition and communication. It can be used for the acquisition of 4～20 mA DC current signals. The module has 16-bit effective resolution, data refresh cycle <0.1 second/channel, ±0.1% accuracy and other features, which are suitable for building monitoring systems in different industries.
The KL-M4112 analog collection module integrates a high‑precision A/D converter with two 4‑20 mA input channels and supports RS‑232 or RS‑485/422 communication. It is designed for safe, stable data acquisition in industrial control systems.
The manual describes the module’s technical parameters, mechanical dimensions, terminal connections, wiring diagrams, and configuration of baud rates and data formats. Installation steps, connector pinouts, and usage precautions are also included to help users set up and operate the device correctly. This manual is written in Chinese.
| Resolution | 16 bit |
|---|---|
| Number of Channels | 2 |
| Supply Voltage | 24 V DC (18‑36 V DC) |
| Power Consumption | <0.6 W |
| Operating Temperature | -10 °C to 60 °C |
| Humidity Range | 5 %–95 % RH |
| Data Refresh Period | <0.1 s per channel |
It supports RS‑232 and RS‑485/422 via a DB‑9 connector.
The conversion resolution is 16 bits.