The MK15 SMD Reed Sensor is a Form A, Single Pole, Single Throw, Normally Open (SPST-NO), Industrial Grade reed switch. MK15-501-D-2 is rated 20 to 25 AT. The MK15 Series Reed Sensor is used in On/Off control switch, proximity, motion, position detection. Supplied in tape and reel according to IEC 286/part 3. Axial or gull-wing lead, high power switch.