@chris Thank you for the insanely fast response. Is it safe to say then that the Multipurpose Sensor I bought is only Zigbee 3 compatible? I saw this other thread where there’s talk of getting the CC2531 to work with Zigbee 3. Zigbee 3.0 on CC2531 with Z-stack 3.0.1 firmware Now that more devices might be coming out that use Zigbee 3, do you think you may move to support the newer firmware for the CC2531? Thank you.