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Zigbee devices Switches and relays

FrankEver FK-BV05

Zigbee smart water valve with flow meter and temperature sensor. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
FrankEver
Model
FK-BV05
Type
Switches and relays
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
On / offstate—settable
Thresholdthreshold% · 0…100settable
Positionposition%read only
Power off statepower_off_stateoff, on, maintainsettable
Weather delayweather_delaycancel, 24h, 48h, 72hsettable
Countdown timercountdowns · 0…86400settable
Water temperaturewater_temperature°Cread only
Water consumed lastwater_consumed_lastL · 0…1000read only
Water consumedwater_consumedLread only
Water leakage statewater_leakage_statewater_leakage_yes, water_leakage_noread only
Single irrigation switchsingle_irrigation_switch—settable
Single irrigation setsingle_irrigation_setL · 0…1000settable
Day irrigation switchday_irrigation_switch—settable
Day irrigation setday_irrigation_setL · 0…1000settable
Water volume alarm switchwater_volume_alarm_switch—settable
Water volume alarm setwater_volume_alarm_setL · 0…1000settable
Water temp alarm switchwater_temp_alarm_switch—settable
Water temp alarm maxwater_temp_alarm_max°C · 0…120settable
Water temp alarm minwater_temp_alarm_min°C · 0…120settable
Water volume alarmwater_volume_alarm—read only
Water temp alarmwater_temp_alarm—read only
Creep switchcreep_switch—settable
Faultfault—read only

MQTT: state and commands

Zigbee2MQTT publishes the device state to zigbee2mqtt/my_device (my_device is the name you give the device). An example message:

{
  "state": "ON",
  "threshold": 50,
  "position": 100,
  "power_off_state": "off",
  "weather_delay": "cancel",
  "countdown": 43200,
  "water_temperature": 0,
  "water_consumed_last": 500,
  "water_consumed": 0,
  "water_leakage_state": "water_leakage_yes",
  "single_irrigation_switch": false,
  "single_irrigation_set": 500,
  "day_irrigation_switch": false,
  "day_irrigation_set": 500,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_off_state":"on"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"weather_delay":"24h"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"single_irrigation_switch":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"day_irrigation_switch":true}'

Watch the topics live from the browser: MQTT client.

Home Assistant automation example

Zigbee2MQTT creates Home Assistant entities from the device name. If it is called my_device, an automation in automations.yaml can look like this:

- alias: "Off at night"
  mode: single
  triggers:
    - trigger: time
      at: "23:30:00"
  actions:
    - action: switch.turn_off
      target:
        entity_id: switch.my_device

Check the YAML: YAML checker.

How to pair it

  1. In Zigbee2MQTT click Permit join.
  2. Put the device in pairing mode: usually a long press of the reset button (5–10 s) until the LED blinks; bulbs: switch the power off and on 5–6 times.
  3. Keep the device close to the coordinator or a router while pairing.
  4. Give it a clear name: MQTT topics and Home Assistant entities are built from it.

Exact procedure and model notes: the device page in the Zigbee2MQTT docs. No coordinator yet: coordinator picker.

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