 typedef OTV0P2BASE::SensorAmbientLight AmbientLight;
 AmbientLight AmbLight;
 
-// FIXME Dummy humidity sensor
+// Dummy humidity sensor TODO Check it works without this.
+OTV0P2BASE::DummyHumiditySensor RelHumidity;
 
 // Ambient/room temperature sensor, usually on main board.
-OTV0P2BASE::RoomTemperatureC16_SHT21 TemperatureC16; // SHT21 impl. // FIXME this should be TMP112
+OTV0P2BASE::RoomTemperatureC16_TMP112 TemperatureC16;
 
 
 ////// ACTUATORS
 
-//// TODO Replace this with a new actuator driver for electric heating.
+// XXX
+// // TODO Replace this with a new actuator driver for electric heating.
 // // DORM1/REV7 direct drive motor actuator.
 // static constexpr bool binaryOnlyValveControl = false;
 // static constexpr uint8_t m1 = MOTOR_DRIVE_ML;

    // Signal that xtal is running AND give it time to settle.
    OTV0P2BASE::sleepLowPowerMs(1000);
    OTV0P2BASE::LED_HEATCALL_OFF();
    OTV0P2BASE::sleepLowPowerMs(250); // TODO: use this time to gather entropy.
    OTV0P2BASE::LED_HEATCALL_ON();
    OTV0P2BASE::sleepLowPowerMs(1000); // TODO: use this time to gather entropy.

    // Initialise the radio, if configured, ASAP because it can suck a lot of power until properly initialised.
    PrimaryRadio.preinit(NULL);

            break;
        }
    }
    // XXX
    // // Provide regular poll to motor driver.
    // // May take significant time to run
    // // so don't call when timing is critical
    // // nor when not much time left this cycle,
    // // nor some of the time during startup if possible,
    // // so as (for example) to allow the CLI to be operable.
    // // Only calling this after most other heavy-lifting work is likely done.
    // // Note that FHT8V sync will take up at least the first 1s of a 2s subcycle.
    // if(OTV0P2BASE::getSubCycleTime() < ((OTV0P2BASE::GSCT_MAX/4)*3))
    //     { ValveDirect.read(); }

    // Command-Line Interface (CLI) polling.
    // If a reasonable chunk of the minor cycle remains after all other work is done
    // AND the CLI is / should be active OR a status line has just been output
