uxcell&reg; 5 Pcs 3144 Hall Effect Sensor Magnetic Detector 4.5-24V Product Name : Hall Effect Sensor;Model : 3144 Voltage : 4.5-24V;Pin Number : 3 Pin Length : 16mm/ 0.63";Size : 19 x 4 x 1.5mm/ 0.75" x 0.16" x 0.06" (L*W*T) Material : Electric Part;Net Weight : 2g Package Content : 5 x Hall Effect Sensor