Tuya smart plug/socket exporter for Prometheus

This is a Prometheus exporter for Tuya compatible WiFi Smart Plugs/Sockets. It uses the tuyapower python library.

Exposed metrics include state (on/off), power (W), current (mA), voltage (V).

# HELP tuyapower_state Tuya plug/socket state
# TYPE tuyapower_state gauge
tuyapower_state{device_id="bf0c....",device_ip="10.0.1.59",device_name="plug 2",device_version="3.3"} 1.0
tuyapower_state{device_id="bf82....",device_ip="10.0.1.61",device_name="plug 1",device_version="3.3"} 1.0
# HELP tuyapower_power Tuya plug/socket power (W)
# TYPE tuyapower_power gauge
tuyapower_power{device_id="bf0c....",device_ip="10.0.1.59",device_name="plug 2",device_version="3.3"} 49.4
tuyapower_power{device_id="bf82....",device_ip="10.0.1.61",device_name="plug 1",device_version="3.3"} 23.5
# HELP tuyapower_current Tuya plug/socket current (A)
# TYPE tuyapower_current gauge
tuyapower_current{device_id="bf0c....",device_ip="10.0.1.59",device_name="plug 2",device_version="3.3"} 0.255
tuyapower_current{device_id="bf82....",device_ip="10.0.1.61",device_name="plug 1",device_version="3.3"} 0.128
# HELP tuyapower_voltage Tuya plug/socket voltage (V)
# TYPE tuyapower_voltage gauge
tuyapower_voltage{device_id="bf0c....",device_ip="10.0.1.59",device_name="plug 2",device_version="3.3"} 230.3
tuyapower_voltage{device_id="bf82....",device_ip="10.0.1.61",device_name="plug 1",device_version="3.3"} 230.2

Setup

This exporter reads a JSON file (devices.json) to get name, device ID and device key for a set of smart devices.

[
  {
    "name": "plug 1",
    "id": "bf82..................",
    "key": "f3d2............"
  },
  {
    "name": "plug 2",
    "id": "bf0c..................",
    "key": "6159............"
  }
]

Device keys

IMPORTANT! For most newer devices you need a device key. However, they are not easily to get. For me it worked to install an old version of the Smart Life - Smart Living app on a rooted Android phone. You can watch an extensive video guide to retrieve the keys even with an Android emulator from Mark Watt Tech on Youtube.

Short description:

1. Install Smart Life - Smart Living 3.6.1 on your rooted Android phone
2. Login with your Smart Life account. Your already paired devices should be visible. If not, you need to pair them.
3. Find the file named preferences_global_keyeu<123xyz...>.xml in /data/data/com.tuya.smartlife/shared_prefs/ and search for localKey

Running

$ python3 tuyapower_exporter.py
loaded 2 devices
metrics available on port 9067
discovered device bf0c.... (plug 2) at 10.0.1.59
discovered device bf82.... (plug 1) at 10.0.1.61
...

Docker

docker build -t tuyapower_exporter .

docker run --rm -p 9067:9067 -p 6666:6666/udp -p 6667:6667/udp tuyapower_exporter

You can also mount your devices.json in your container without rebuilding the image:

docker run --rm -v `pwd`/devices.json:/devices.json -p 9067:9067 -p 6666:6666/udp -p 6667:6667/udp tuyapower_exporter