M20 Straight Waterproof Connectors with Lever Nuts with an IP rating of IP68 (0.5bar). In-line assembly and seperate screw and clamp terminal block allows for quick easy installation. High quality construction with tough nylon 66 body and brass terminal blocks. Conductor size 0.5mm2 to 2.5mm2, suitable for -20 to +85°C. CE and RoHS certified.