Develco Smart Plug, error on OnOff cluster (state from device not reporting)

[cortado]

What happened?

Coffee maker almost caught fire, since automatons did not work any more: Smart plugs from Devleco are suddenly not reporting state from hardware switch back to Z2M. They change state in dashboard only of I press "refresh" button.

I get this error when I refresh device config:

z2m: Failed to configure 'Smart Plug', attempt 9 (Error: ZCL command 0x0015bc002f008008/1 genOnOff.configReport([{"minimumReportInterval":0,"maximumReportInterval":65000,"reportableChange":1,"attribute":"onOff"}], {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":true,"direction":0,"reservedBits":0,"writeUndiv":false}) failed (Delivery failed for '55205'.) at EmberOneWaitress.deliveryFailedFor (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/adapter/oneWaitress.ts:100:31) at EmberAdapter.onMessageSent (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:458:42) at Ezsp.emit (node:events:518:28) at Ezsp.ezspMessageSentHandler (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:5082:14) at Ezsp.callbackDispatch (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:734:26) at Ezsp.onAshFrame (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:387:22) at UartAsh.emit (node:events:518:28) at Immediate. (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/uart/ash.ts:1192:45) at processImmediate (node:internal/timers:485:21))

What did you expect to happen?

I expected that hardware button would report and change state in Z2M – like it has before, for years.

How to reproduce it (minimal and precise)

No response

Zigbee2MQTT version

2.6.3

Adapter firmware version

7.4.4.3

Adapter

Home Assistant Connect ZBT-1

Setup

Zigbee2MQTTadd-on: 2.6.3-1
HAOS on RPi4: 16.3
MQTT: Mosquitto add-on
Home Assistant: 2025.11.1
Coordinator type: EmberZNet

All latest updates

Device database.db entry

No response

Debug log

z2m: Failed to configure 'Smart Plug Vinskap', attempt 9 (Error: ZCL command 0x0015bc002f008008/1 genOnOff.configReport([{"minimumReportInterval":0,"maximumReportInterval":65000,"reportableChange":1,"attribute":"onOff"}], {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":true,"direction":0,"reservedBits":0,"writeUndiv":false}) failed (Delivery failed for '55205'.) at EmberOneWaitress.deliveryFailedFor (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/adapter/oneWaitress.ts:100:31) at EmberAdapter.onMessageSent (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/adapter/emberAdapter.ts:458:42) at Ezsp.emit (node:events:518:28) at Ezsp.ezspMessageSentHandler (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:5082:14) at Ezsp.callbackDispatch (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:734:26) at Ezsp.onAshFrame (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/ezsp/ezsp.ts:387:22) at UartAsh.emit (node:events:518:28) at Immediate. (/app/node_modules/.pnpm/zigbee-herdsman@6.3.2/node_modules/zigbee-herdsman/src/adapter/ember/uart/ash.ts:1192:45) at processImmediate (node:internal/timers:485:21))

Notes

No response

[cortado]

@Koenkk Managed to solve it by unbinding source endpoint 1, checking and binding cluster OnOff on source endpoint 2, then setting reporting on OnOff cluster from endpoint 2.

But I guess this need to be solved on some other level, because interviewing and configuring a new device (which I just did) comes up with error.

[Koenkk]

Could you provide the data/database.db entry of this device + debug log when configuring the device?

See this on how to enable debug logging.

[cortado]

Could you provide the data/database.db entry of this device + debug log when configuring the device?

See this on how to enable debug logging.

I have enabled debug loggin (If it is correct to add in configuration for z2m add-on?
But what debug info do you need, and how to find data/database.db entry of this device?
#noob

[Koenkk]

Which develco plug is this? (what model is shown in the z2m frontend -> device -> about page)

Note to self; created fix/develco-plug branch.

[cortado]

SPLZB-131

[Koenkk]

Thanks, could you also provide the data/database.db entry of this device?

[cortado]

how do I find that 😳

[Koenkk]

Fixed the issue, after updating try to re-configure the device.

Changes will be available in the dev branch in a few hours from now and in the next release which is every 1st of the month.