Telecommunication

434 MHz embedded radio modem for data transmission up to a few km or more

The SLR-434M smart modem is a compact and easy-to-use embedded radio modem operating in the 434 MHz ISM band. It allows for conventional FSK mode communication and also communication using LoRa® mode, providing long range at a lower bit rate.

With its high receiving sensitivity, it is possible to transmit up to a few kilometers or more with line of sight using low RF output power.

By connecting to an external CPU or PC with a UART interface, the user can send data or design simple control systems using Circuit Design’s dedicated command protocol for industrial applications. It is also possible to process up to eight switching signals.

Applications include data transmission, telemetry, and telecontrol.

* Under certain conditions, when LoRa modulation is used in conjunction with a low data rate, higher sensitivity is achieved and longer range becomes possible. When used in conventional FSK mode, up to 600 m (LOS) range should be expected.

The SLR-434M contains a Semtech’s LoRa® wireless RFIC.
The LoRa® Mark and LoRa Logo are trademarks of Semtech Corporation.

2.4 GHz FCC Part 15 certified radio units for operation of agricultural machinery

The “KST2.4S” is a 6-contact input unit that wirelessly transmits external contact (on/off) signals. The input voltage ranges from 6 to 24 VDC, while the operating voltage is between 6 and 24 VDC. When combined with the “KSR2.4” 6-contact output unit, which has momentary, toggle, and one-shot output modes, communication over a distance of 50 to 100 m can be achieved in less than 70 ms.