WHEN max( CASE WHEN ei.equipment_index_key = 'FHS_FirePoolDevice_WaterLevel' or ei.equipment_index_key = 'FHS_WirelessliquidDetector_WaterLevel' THEN ei.`value` END ) < IFNULL( rp.min_water_level, 0 )
AND rp.max_water_level IS NULL THEN
'--' ELSE IFNULL((
FORMAT(
abs(
IFNULL(
max( CASE WHEN ei.equipment_index_key = 'FHS_FirePoolDevice_WaterLevel' or ei.equipment_index_key = 'FHS_WirelessliquidDetector_WaterLevel' THEN ei.`value` END ),