SS-22 Motor Speed Controller Governor Speed Control Unit AC220V  Description:  Working voltage: AC220V 50\/60Hz Rated power: 15W， 25W， 40W， 60W Speed adjustment range: 90-2800r\/min 50Hz control method: forward \/ reverse Optional scope of application: YYPJ， YCJT， YYCJ etc. series five-wire motor with tachometer line shape Install method: 35mm guide rail Size: 57x40x78mm Weight: 151g  Package included:  1 x Speed control unit