ITEM NAME:10 x 3 Pins Unipolar Hall Effect Sensor Magnetic Detector 2.5-20V B1Y9 10 x 3 Pins Unipolar Hall Effect Sensor Magnetic Detector 2.5-20V B1Y9 C7K7 Product Name : Hall Effect Sensor Model : U18 Voltage : 2.5-20V 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 Color : Black Net Weight : 5g Package Content : 10 x Hall Effect Sensor Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.