Saelig Company introduces the Circuit Design SLR-434M Smart Modem - a compact, narrow-band embedded radio modem operating in the 434 MHz ISM band. It incorporates LoRa technology to achieve a long range for low bit-rate data with low power. Transmitting at distances up to 1800 feet or more, the SLR-434M is also switchable to accommodate conventional FSK communication.
The unit can transmit data or operate in simple control systems using Circuit Design's dedicated command protocol from an external CPU or PC via an RS232 or COMport interface. The SLR-434M can process 8 I/O switching signals. With up to 10 mW RF output power from the SMA connector, the SLR-434M can be used in simplex or duplex mode on 137 channels. It operates from a 3.5 - 5.0V supply, consuming less than 30mA when transmitting. Its low power consumption makes battery operation possible with this sturdy 1.6" x 1.2" x 0.25" module.
Applications include data transmission, telemetry, and control in buildings, water level and dam monitoring, tunnel and bridge condition monitoring, etc.
The TB-SLR-RS2 is an RS232 interface board for experimenting with the SLR-434M module. The built-in DB9 connector allows quick connection to the COM port of PC or PLC. The board is equipped with transmit/receive LED, a power supply terminal, main switch and an interface to sub boards. The module can be used with a coax extension cable to allow optimum placement of the antenna according to the environment. For more details, watch a descriptive video and checkout the datasheet.