M Sensor SLD Connectors Amphenol LTW M Sensor Solder (SLD) Connectors feature a 1.5A to 28A current range and IP65, IP67, and IP68 waterproof ratings. The M series solder connectors meet IEC 61076-2-101 and IEC 61076-2-104 standards and include receptacles, connectors over molded with cable, and field-installable connectors. Amphenol LTW M Sensor Solder Connectors are available in M8 SMT and M12 SMT models.