AliExpress alternative to the Texas Instruments Millimeter Wave Sensor Module

It uses the same TI radar silicon (IWR1843 or AWR1843, 79 GHz), so the core RF function is equivalent. However, this is a third-party breakout board, not TI's official Evaluation Module, which means the PCB layout, connector pinout, and bundled firmware support may differ. The verifier could not confirm form-factor parity due to missing reference images, so treat this as a functional equivalent rather than a drop-in replacement.

TI's mmWave SDK targets the IWR and AWR chip families, so the core firmware should be compatible at the silicon level. In practice, third-party breakout boards sometimes use non-standard JTAG or UART header layouts that require adapter cables or custom board configuration files. Check whether the seller provides a schematic before assuming the SDK's out-of-box demos will run without modification.

The IWR1843 can be used for people-counting and presence detection — the use case Smart Home Solver covers — but it requires custom firmware or a middleware layer to produce Home Assistant-compatible MQTT output. It does not natively support HomeKit, Alexa, or Google Home. Most DIY integrations use ESPHome or a companion microcontroller to bridge the radar output to a home-automation hub.

TI's IWR1843 EVM typically runs on a 5V USB input with on-board regulators supplying the 1.8V and 3.3V rails needed by the chip. Third-party core boards vary — some expose raw power pins requiring a bench supply, others include a USB-C or micro-USB interface. Confirm the power input specification with the seller, as applying incorrect voltage will damage the RF front-end.

The IWR1843 is qualified for industrial environments; the AWR1843 is qualified for automotive applications and carries AEC-Q100 certification. For home-automation prototyping either chip works functionally, but the firmware image and mmWave SDK configuration file must match the specific device. Since this listing groups both variants, confirm with the seller which chip is actually populated on the board you will receive.

In the United States, 77–81 GHz radar operation for unlicensed indoor sensing falls under FCC Part 15 rules, and TI's modules are designed to operate within those limits. A third-party core board is not itself FCC-certified, so using it in a finished product intended for sale would require separate approval. For personal prototyping and experimentation indoors, the transmit power levels involved are well below exposure limits set by the FCC and ICNIRP.