FYQLA1-140R-3. Installation. Logic Amplifier. Relay output. Accepts up to six 50FY sensors. Stainless steel housing. Max. surge current (8/20 ?¶Ãs) 20 kA. 500 V isolation from earth. Suitable for hazardous area. Up to SIL 3 acc. to IEC/EN 61508. Self configuration in redundant systems. Permanently self-monitoring