Kertau UTM Zone 48N - EPSG:24548

WKT

PROJCS["Kertau_UTM_Zone_48N", 
	GEOGCS["GCS_Kertau", 
		DATUM["D_Kertau", 
			SPHEROID["Everest_1830_Modified", 6377304.063, 300.8017]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 500000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", 105.0], 
	PARAMETER["Scale_Factor", 0.9996], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Kertau_UTM_Zone_48N", 
	BASEGEOGCRS["GCS_Kertau", 
		DATUM["D_Kertau", 
			ELLIPSOID["Everest_1830_Modified", 6377304.063, 300.8017]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 500000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", 105.0], 
		PARAMETER["Scale_Factor", 0.9996], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "24548"]]

Data from @esri/proj-codes

{
  "wkid": 24548,
  "latestWkid": 24548,
  "gcsWkid": 4245,
  "macro": "PE_PCS_KERTAU_UTM_48N",
  "name": "Kertau_UTM_Zone_48N",
  "wkt": "PROJCS[\"Kertau_UTM_Zone_48N\",GEOGCS[\"GCS_Kertau\",DATUM[\"D_Kertau\",SPHEROID[\"Everest_1830_Modified\",6377304.063,300.8017]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",105.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Kertau_UTM_Zone_48N\",BASEGEOGCRS[\"GCS_Kertau\",DATUM[\"D_Kertau\",ELLIPSOID[\"Everest_1830_Modified\",6377304.063,300.8017]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",105.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"24548\"]]",
  "description": "Kertau UTM Zone 48N",
  "authority": "EPSG",
  "version": "2.1(3.0.1)",
  "deprecated": "no",
  "areaname": "Malaysia - West Malaysia - east of 102~E",
  "extent": {
    "slat": 1.21,
    "nlat": 7.81,
    "llon": 102,
    "rlon": 105.82
  }
}