esphome:
  on_boot:
    then:
      - lambda: |-
          // Test deprecated std::string overload still compiles
          std::string key = "00112233445566778899aabbccddeeff";
          id(dsmr_instance).set_decryption_key(key);

dsmr:
  id: dsmr_instance
  decryption_key: 00112233445566778899aabbccddeeff
  max_telegram_length: 1000
  request_pin: ${request_pin}
  request_interval: 20s
  receive_timeout: 100ms