var toolbox_relay = {
   "kind": "categoryToolbox",
   "contents": [{
	  "kind": "category",
	  "name": "%{BKY_CAT_RELAY}",
		"toolboxitemid": "RELAY",
		"levels": "1,2,3",
		"level": "1",
	  "categorystyle": "relay_category",
		"cssConfig": {
		  "icon": "customIcon fas fa-bolt"
		},
	  "contents": [{
		 "kind": "block",
		 "type": "RELAY_LOGICAL",
		 }, {
		"kind": "block",
		"type": "RELAY_MOSFET"
		 }
	  ]
   }]
};