SMC D-A54 Auto Switch, Reed, General Purpose: Industrial Air Cylinder Accessories: Amazon.com: Industrial & Scientific
D-Z73L SMC | SMC Reed Pneumatic Switch, D-Z Series, 24 V dc, 100 V ac, with LED indicator | 350-0755 | RS Components
Amazon.com: Hicello SMC Type DA73 Air Cylinder Magnetic Reed Switch, Proximity Pneumatic Sensor LED Indicator Compatible for CDQ2B/CD85N/CXV/CXT/CDQM/CRA1 : Industrial & Scientific