STD-504

Circuit Design STD-504 from Saelig Saelig Logo

NEW PRODUCT ANNOUNCEMENT
FOR IMMEDIATE RELEASE: March 2, 2026
Contact: Alan Lowne, President, Saelig Company, Inc.
Tel: (585) 385-1750 Email: [email protected]

Saelig Announces the STD-504 Compact True-Diversity 2.4 GHz Radio Transceiver Module
The STD-504 radio transceiver from Circuit Design, a leading supplier of low power radio modules, is designed for reliable industrial communications in the congested 2.4 GHz band

Fairport, NY, USA: Saelig Company, Inc. has introduced the STD-504 transceiver, designed for reliable communication in the crowded the ISM 2.4 GHz band. Allowing for worldwide operation, the STF-504 is compliant with EN, FCC, ISED and ARIB standards to suit the global market. To ensure reliable communication, the module incorporates direct sequence spread spectrum technology, making it highly resistant to interference in the 2.4 GHz band. It can achieve over 300m line of sight communication. Low operating voltage proves useful when communicating using battery power.

True diversity in the form of two independent receiving circuits ensure the highest signal level is demodulated, providing communication stability and avoiding dropouts due to multipath interference. Additional transmitter diversity is available by selecting which antenna is used for transmission. Configuration using serial commands is possible, and additional data in/out terminals provide a transparent interface to use custom or existing protocols without adjustment. In addition to setting channels individually, a channel step option on the STD-504 allows the user to program and step through a channel plan (20 channels maximum) using a toggle pin.

Technical Features

CE, FCC, ISED and ARIB compliant
STD-503 pin compatible
Uses direct sequence spread spectrum (DSSS) modulation
Channel stepping option controlled via CHC pin
A true diversity receiver (two built-in receiver circuits)
Transmitter diversity by antenna selection
Module settings using dedicated commands
Data communication using a transparent interface
Low power operation
75 RF channels
TX: 55 mA, RX: 60 mA at 3.3 V
Data rate 19.2 kbps
Communication range 300 m LOS
Onboard temperature sensor

Aimed at industrial applications where reliable connections are essential, such as remote telecontrol or telemetry systems, the small and compact STD-504 is suitable for embedding in many kinds of industrial equipment.

Circuit Design, Inc. is a leading Japanese supplier of low-power radio modules, highly rated for quality and performance, which are used in numerous industrial applications such as industrial remote control, telemetry, monitoring systems, tracking systems, etc. For detailed specifications, free technical assistance, or additional information, please contact Saelig 1-888-7SAELIG, via email: [email protected], or by visiting www.saelig.com.

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Saelig Announces the STD-504 Compact True-Diversity 2.4 GHz Radio Transceiver Module The STD-504 radio transceiver from Circuit Design, a leading supplier of low power radio modules, is designed for reliable industrial communications in the congested 2.4 GHz band

Saelig Announces the STD-504 Compact True-Diversity 2.4 GHz Radio Transceiver Module
The STD-504 radio transceiver from Circuit Design, a leading supplier of low power radio modules, is designed for reliable industrial communications in the congested 2.4 GHz band