JYB-714 series liquid level is used for liquid level automatic control in civil water towers, elevated water tanks, underground reservoirs, etc. with control circuits of AC 50Hz/60Hz and rated control voltage up to 380V. The relay can be wired to realize automatic water supply or discharge control upon users’ request. This product is not applicable for liquid level control of poorly conductive liquids such as oil, pure water, explosive or inflammable chemical liquids as well as sewage of high density. Standards:IEC 60947-5-1