we77WE77Ex-1 230V; WE77Ex-1 230V Switch Amplifier. Key Benefits at a Glance . 1-channel; Control circuit EEx ia IIC; 230 V AC supply voltage; Reversible mode of operation; LeadApprovals: WE77Ex-1 230V Language Selection: default Bulgarian Croatian Czech Danish Dutch English Estonian Finish French German Greek Hungarian Italian Latvian Lithuanian Polish