Specification:Part-No. 34794901Supply AC 50/60Hz, 230V, ±10%, 3VAAmbient temperature range: -30°C – +60°CRelay AC 240V.max.2.5A, C300Features:Level monitoringThe OLC series consists of a screw-in prism unit and an optical level detection device. The prism is installed in the compressor or the vessel..