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<p>I’m desperately trying to resolve Zigbee2MQTT communication issues with Legrand 067772 double wired switches (with neutral). They work perfectly for a short time right after pairing, but very quickly they start becoming randomly reachable/unreachable.</p><p>My objective—which seems extremely basic to me—is:</p>

1. <p>to be able to send a command via Zigbee2MQTT to the switch, and</p>
2. <p>to have Zigbee2MQTT reliably receive a message when the switch is used physically.</p>

<p>At the moment, a physical press may report immediately, with a delay of several seconds, or not at all.<br />Conversely, sending a command via MQTT sometimes triggers an immediate reaction, or sometimes results in a timeout with an error like:</p><p>Error: ZCL command 0x00047400002f0e54/1 genOnOff.off({}, {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":false,"direction":0,"reservedBits":0,"writeUndiv":false}) failed (Timeout - 4767 - 1 - 171 - 6 - 11 after 10000ms)</p><p>Or No Active endpoints errors</p><p>I’d like to emphasize that Zigbee mesh quality is not the issue: many other devices work perfectly on the same network (including Legrand 067797 and other 067772 units).</p><p>This behavior makes these switches unusable for my setup.</p><p>Thank you in advance for any guidance or recommendations (firmware behavior, configuration parameters, known issues, etc.).</p>

Hello Pierre,

Indeed, it’s a strange behavior but we didn’t have any similar feedback from users

Could you please send me a Zigbee capture of the packets ? I’ll then ask the teams to investigate

Have a good day,

Leslie – Community Manager