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Nedis Smoke Detector Smoke Sensor (WIFIDS10WT)
Nedis Smoke Detector

Available from:
Nedis.com





Manufacturer:
Nedis.com

Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 Tuya Tx
GPIO02 None
GPIO03 Tuya Rx
GPIO04 None
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 None
GPIO14 None
GPIO15 None
GPIO16 None
FLAG None
Configuration (old format, will be converted to new template when applied)
{"NAME":"Nedis WIFIDS10WT","GPIO":[0,107,0,108,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":54}

Flashing

I successfully flashed this device using both Tuya Convert snd serial flashing soldering cables directly onto the TYWE3S chip. I would recommend the serial flashing method which also allows you to configure the setup without worrying about the chip going to sleep.

If configuring using the battery, 3 presses within 2 seconds energise the TYWE3S for about 50 seconds.

After initial setup type the following into the Tasmota console window:

TuyaMCU 51,51

The following makes sure the device does not get reset inadvertently or during low power conditions:

Backlog SetOption1 1; SetOption65 1

Functions

To get smoke detected alerts and battery status use rules to send data to custom topics.

Rule1
  ON TuyaReceived#CmndData=6A04000100 DO publish2 stat/%topic%/FIRE OFF ENDON
  ON TuyaReceived#CmndData=6A04000100 DO publish2 stat/%topic%/TEST OFF ENDON
  ON TuyaReceived#CmndData=6A04000100 DO publish2 stat/%topic%/BATTERY OFF ENDON
  ON TuyaReceived#CmndData=6A04000100 DO publish2 stat/%topic%/MUTE OFF ENDON
  ON TuyaReceived#CmndData=6A04000101 DO publish2 stat/%topic%/FIRE ON ENDON
  ON TuyaReceived#CmndData=6A04000101 DO publish2 stat/%topic%/MUTE OFF ENDON
  ON TuyaReceived#CmndData=6A04000102 DO publish2 stat/%topic%/FIRE ON ENDON
  ON TuyaReceived#CmndData=6A04000102 DO publish2 stat/%topic%/MUTE ON ENDON
  ON TuyaReceived#CmndData=6A04000103 DO publish2 stat/%topic%/FIRE ON ENDON
  ON TuyaReceived#CmndData=6A04000103 DO publish2 stat/%topic%/TEST ON ENDON
  ON TuyaReceived#CmndData=6A04000103 DO publish2 stat/%topic%/MUTE OFF ENDON
  ON TuyaReceived#CmndData=6A04000104 DO publish2 stat/%topic%/BATTERY ON ENDON

Enable the rule: Rule1 1

If you wish to integrate the device seamlessly in Home Assistant, type the following into the Tasmota console window (modify the names to your requirements):

Rule2
  ON system#boot do publish2 homeassistant/binary_sensor/%macaddr%_fire/config {"name":"Fire Alarm","state_topic":"stat/%topic%/FIRE","device_class":"smoke","unique_id":"%macaddr%_fire","device":{"connections":[["mac","%macaddr%"]]}} ENDON
  ON system#boot do publish2 homeassistant/binary_sensor/%macaddr%_test/config {"name":"Fire Alarm Test","state_topic":"stat/%topic%/TEST","icon":"mdi:bell-alert","unique_id":"%macaddr%_test","device":{"connections":[["mac","%macaddr%"]]}} ENDON
  ON system#boot do publish2 homeassistant/binary_sensor/%macaddr%_mute/config {"name":"Fire Alarm Mute","state_topic":"stat/%topic%/MUTE","icon":"mdi:bell-sleep","unique_id":"%macaddr%_mute","device":{"connections":[["mac","%macaddr%"]]}} ENDON
  ON system#boot do publish2 homeassistant/binary_sensor/%macaddr%_battery/config {"name":"Fire Alarm Battery","state_topic":"stat/%topic%/BATTERY","device_class":"battery","unique_id":"%macaddr%_battery","device":{"connections":[["mac","%macaddr%"]]}} ENDON

Enable the rule: Rule2 1

Enable SetOption66 1 to forward TuyaReceived messages to MQTT.

This device on Tasmota 8.2 does not report a full TuyaMCU message, but it sends 55AA000000010101 when smoke is detected.

I am powering this device using a PoE connection linked to a DC-DC step down PCB which fits nicely in place of the 2xAA batteries. I have soldered a cable between the power and the VCC of the TYWE3S which keep the Tasmote interface permanently available and allows simple resetting of the smoke detector after an activation.

PCB PCB

Pinout

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