MEDER Electronic (Standex) MK31 SMD Reed Sensor is a 30VAC/DC switching sensor reed relay designed for use in metering, appliances, medical, security, and telecommunication. MEDER Electronic (Standex) MK31 SMD Reed Sensor also provides 3W maximum rated power along with 0.3A maximum switching current and 0.5A maximum carry current. MK31 is ideal for low-power operations. It is centrally aligned and features a gap of the paddles that is exactly in the middle.