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KB31100 CDMA Remote Terminal Unit

1.1 KB31100 CDMA RTU Brief Introduction

KB31100 CDMA RTU(Remote Terminal Unit)is the use of high-reliability processors and industrial grade CDMA wireless data transmission module, is embedded microcontroller technology, the CDMA wireless communication technology and engineering measurement and control technology, has high reliability, high stability, powerful, extensive application and other characteristics of telemetry, remote control, collection, wireless data transmission communication in one of the new generation of control terminal.
KB3110 CDMA RTU integrating analog, digital signal acquisition, relay control output and CDMA wireless data communication in one, built-in Modbus RTU protocol, can directly access standard transmitter output analog signal ,level signal, pulse signal(customize),dry contact, connection and control all kinds of Modbus RTU protocol in industrial instrumentation.
This product is suit for power system automation, industrial monitoring, traffic management, meteorology, environmental protection, network monitoring, financial, securities and other sectors of the application. Taking the needs of application sector’s networking into account, the network structure realizes the VPN. Suitable for the center to multi-point, point the scattered of the remote data acquisition and control.

2. KB31100 CDMA RTU Feature

  • 5-way relay switch output, Maximum control output 250V/5A.
  • 5-way analog signal acquisition, 4-20mA or 0-5V, 12 bit resolution, speed 100 KHz.
  • 2-way switch input, the input level can be customized.
  • 2-way switch output, the output level can be customized.
  • Using industrial grade CPU with high performance, low power consumption, strong anti-interference capability.
  • Built-in Modbus RTU communication protocol.
  • Acquisition, data transmission, control integration, improve the system reliability, lower cost.
  • Embedded watchdog, always ready, off-line automatic recovery.
  • Equipped with a variety of interface resources: analog signal acquisition, digital input and output, pulse signal acquisition.
  • Automatically IP register mechanism, can achieve various server modes, build complete ultra-large-scale wireless applications.
  • Support the GPRS/CDMA/SMS remote communication, but also in support of the local RS232/RS485 communication mode.
  • Remotely modify the contents of SMS or GPRS parameters.
  • Alarm information sent directly to set phone.
  • Onboard industrial communication module is convenient for users to choose CDMA network.
  • Remote control function is powerful, directly control field device through the monitoring center.
  • Provide user setting software, open interface, convenient and configuration software or other control software to connect.

3. Safe Use

KB3110 CDMA RTU Completely complied with national radio product safety technical regulations.
Warm Tip: You must not touch the antenna with your hands or body. During 15 seconds after KB3110 CDMA RTU started, Please keep away from the antenna. If the antenna is damaged, you must replace it in time, assorted and qualified cable and antenna.

4. EMI

Now most electric device all has electromagnetic pulse hardening, but some old device may have no, under RF power radiation, it may go wrong. When you use KB3110 CDMA RTU, please check the device nearby have electromagnetic pulse hardening or not.

5. Appearance and Interface


. Size: 147mm (L)*90mm (W)*36mm (H)

6. KB31100 CDMA RTU Technical Specification

6.1 Basic parameters:

Supply Voltage: 12V
Power consumption: <3W
Communication mode:

  • RS232:300-115200bps
  • RS485: 300-115200bps
  • CDMA Parameters:

Frequency Band: 800MHz
Output Power: 30mA/5V
Sensitivity: <-104 dBm
Compatible standard AT command(GSM07.05 and 07.07)
Support extend command
Support SMS、USSD、CSD
Embed TCP/IP Protocol
Transparent data transmission
Support IP address or domain name data center, support for APN

The analog acquisition parameters:

1.5-way analog acquisition
2. Acquistion range:

  • 0 ~ 50mV
  • 0 ~ 5V
  • 4 ~ 20mA

3. Conversion time:

  • Filter: 2.16S/8 channel.
  • No filter: 0.72S/8 channel.

Digital Parameters:

1. 5-way relay outputs: 250V/5A
2. 2-way switch output level can be customized
3. 2-way switch input level can be customized

Operating temperature range: :-40℃ ~ 80℃
Currently humidity: 20%-95%(no condensation)