Hi! Yup, it is a ‘door’, but that wasn’t the problem. As often with something, you spend hours & hours trying to work it out, ask for help and then figure it out yourself. Reading your reply and checking my config, spotted I didn’t have “Enable State Reporting” toggled on in Home Assistant Cloud (next challenge will be to only allow state reporting for this one sensor!).
Feel bit of a fool now and really appreciate the speedy reply!
binary_sensor:
- platform: template
sensors:
govee_light_sensor:
friendly_name: "GoveeLightSensor"
value_template: '{{ is_state("light.govee_light","on") }}'
device_class: 'door'