In this video I will show you how to send an RF Signal with a Sonoff RF Bridge running Tasmota via MQTT. We’ll connect this to a “dumb” doorbell

I take a normal RF doorbell and make it smart with Home assistant and Node Red applying logic on when I want the doorbell to ring (and not wake up the kids).

Configuration.yaml

Find the configuration for both the receiving signal and the sending signals here.

binary_sensor:
#RF Door Bell Receive Signal    
  - platform: mqtt
    name: "Front Door Bell"
    state_topic: "tele/rf-bridge/RESULT"
    value_template: '{{value_json.RfReceived.Data}}'
    payload_on: "0C7F42"
    payload_off: "0C7F42_off"
    off_delay: 5
    device_class: motion
    qos: 1

switch:
#RF Door Bell Send Signal
  - platform: mqtt
    name: "Ring Door Bell"
    command_topic: "cmnd/rf-bridge/Backlog"
    availability_topic: "tele/rf-bridge/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    state_topic: "tele/rf-bridge/RESULT"
    value_template: '{{value_json.RfCode}}'
    payload_on: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #000001"
    payload_off: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #000001_off"
    state_on: "#000001"
    state_off: "#000001_off"
    optimistic: true
    retain: false
    qos: 2

Node Red Flow

Import the flow directly into node red with the Menu Button (Top Right) and import:

[{"id":"af18eb8c.bbb698","type":"server-state-changed","z":"83910fd7.19f61","name":"Door Bell","server":"e53e7ab2.787fe8","version":1,"exposeToHomeAssistant":false,"haConfig":[{"property":"name","value":""},{"property":"icon","value":""}],"entityidfilter":"binary_sensor.your_door","entityidfiltertype":"exact","outputinitially":false,"state_type":"str","haltifstate":"on","halt_if_type":"str","halt_if_compare":"is","outputs":2,"output_only_on_state_change":true,"x":140,"y":280,"wires":[["2d34d364.42e68c"],[]]},{"id":"2516f6b1.4f7f4a","type":"api-call-service","z":"83910fd7.19f61","name":"Ring Door Bell","server":"e53e7ab2.787fe8","version":1,"debugenabled":false,"service_domain":"homeassistant","service":"turn_on","entityId":"switch.ring_door_bell","data":"","dataType":"json","mergecontext":"","output_location":"","output_location_type":"none","mustacheAltTags":false,"x":610,"y":280,"wires":[[]]},{"id":"2d34d364.42e68c","type":"time-range-switch","z":"83910fd7.19f61","name":"8 till 8","lat":"51.3","lon":"-1.9","startTime":"08:00","endTime":"20:00","startOffset":0,"endOffset":0,"x":340,"y":220,"wires":[["2516f6b1.4f7f4a"],[]]},{"id":"e53e7ab2.787fe8","type":"server","z":"","name":"Home Assistant","addon":true}]