3Pins A3144/OH3144/44E/AH3144E Hall Effect Sensor Magnetic Detector for Arduino The A3144 Hall Effect Sensor Magnetic Detector are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +125°C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet. Supply Voltage: 28 V Reverse Battery Voltage:-35 V Continuous Output Current:25 mA Storage Temperature Range:-65°C to +170°C Package Content : 20 x Hall Effect Sensor