value is % of difference with stocked value. if new value is stored if // superior or inferior at value +/- x% $properties2log = array( "action" => null, "state" =>null, "contact" => null, "temperature" =>2, "state_l1" => null, "state_l2" => null, "humidity" => null, "current_heating_setpoint" => null, "position" => null, "pressure" => 0.5, "occupancy" => null, "tamper" => null, "illuminance_lux" => 8, // "illuminance" => 8, "requested_brightness_level" => 8, "tempf" => 5, "humidity" => null, "dewptf" => 5, "windchillf" => 5, "winddir" => 8, "windspeedmph" => 20, "windgustmph" => 20, "rainin" => null, "dailyrainin" => null, "weeklyrainin" => null, "monthlyrainin" => null, "yearlyrainin" => null, "solarradiation" => 10, "UV" => null, "indoortempf" => 5, "indoorhumidity" => null, "baromin" => 5 );