Logo
Tuya PM Box Air Quality Sensor (DCR-PM)
Tuya PM Box

Available from:
Aliexpress.com





Manufacturer:
Expo.tuya.com

Install method:
Replace module

GPIO #Component
GPIO00 User
GPIO01 User
GPIO02 User
GPIO03 User
GPIO04 User
GPIO05 User
GPIO09 None
GPIO10 None
GPIO12 User
GPIO13 User
GPIO14 User
GPIO15 User
GPIO16 User
GPIO17 None
Configuration
{"NAME":"PM Box","GPIO":[1,1,1,1,1,1,0,0,1,1,1,1,1,0],"FLAG":0,"BASE":54,"CMND":"TuyaMCU 99,91 | TuyaMCU 71,2 | TuyaMCU 73,3 | HumRes 1 | TempRes 1 "}
This device uses CB3S module which needs to be replaced with ESP-12, ESP-C3-12F or ESP-12H module. Besides the module, this process will require a heat gun, soldering tools and moderate soldering skill. Read more about module replacement in a detailed guide.

Identified with MCU Product ID: {"p":"uihrxfv4zpx3dx3s","v":"1.0.0","m":0}.

Please read TuyaMCU article to understand the terminology and configuration process.

Functions

dpid function
2 Temperature
3 Humidity
7 PM2.5
9 PM10

Home Assistant Integration

Paste the entire rule box text in console and press enter.

Rule3 
on tuyareceived#dptype2id9 do publish stat/%topic%/pm10 %value% endon on tuyareceived#dptype2id7 do publish stat/%topic%/pm25 %value% endon on system#boot do devicename endon on devicename#data do var16 %value% endon

on var16#state do publish2 homeassistant/sensor/%macaddr%/pm10/config {"name":"%value% PM10","state_topic":"stat/%topic%/pm10","val_tpl":"{{ value }}","dev_cla":"pm10","unit_of_meas":"µg/m³","avty_t":"tele/%topic%/LWT","pl_avail":"Online","pl_not_avail":"Offline","unique_id":"%macaddr%_pm10","dev":{"cns":[["mac","%macaddr%"]]}} endon

on var16#state do publish2 homeassistant/sensor/%macaddr%/pm25/config {"name":"%value% PM2.5","state_topic":"stat/%topic%/pm25","val_tpl":"{{ value }}","dev_cla":"pm25","unit_of_meas":"µg/m³","avty_t":"tele/%topic%/LWT","pl_avail":"Online","pl_not_avail":"Offline","unique_id":"%macaddr%_pm25","dev":{"cns":[["mac","%macaddr%"]]}} endon

Enable rule with Rule3 1.

On a reboot or command DeviceName the discovery payloads for two PM sensors will be sent to Home Assistant