Industrial UTING JF21-E1B Wireless Remote Control for Hoist Crane 8 Channels Controller 220/380AC ,Easy to Operate

*The voltage range is 18-65V AC DC or 65-440V AC DC ,Frequency range is VHF:310-331 MHz . (3 pieces circuit board) (There is not dust cover)(UTING-INNOVATION) *The voltage range is AC 220 or AC 380V,Frequency range is UHF: 425-446 MHz . (2 pieces circuit board) (There is dust cover)(UTING-JF Series) * Thecontrolling distance isapprox 50-80M .