Features Maximum Induction Voltage: The magnetoelectric speed sensor has stable and reliable performance, with a maximum induction voltage of 50V AC and a maximum tightening torsion of 49N.m. Two Output Terminals: The magnetoelectric sensor has two output terminals, which should be connected reliably with shielded wire between the output of the sensor and the tachometer (not included) to ensure smooth transmission. Simple Structure: Our magnetoelectric speed sensor is simple in structure, easy to install and light in weight, very easy to carry and use. Induced AC Signal: The magnetoelectric speed sensor is installed beside the flywheel of the engine, and when the engine rotates, the speed sensor induces an AC signal, whose frequency is proportional to the engine speed. Matching Use: Our speed sensor and tachometer (not included) are used together to measure the engine speed. Specification: Item Type: Speed Sensor Material: Brass Operating Ambient Temperature: -30℃-120℃ Maximum Sensing Voltage: 50VAC Maximum Tightening Torsion: 49N.M Mounting Thread: M18-1.5x60mm, Approx. 60mm / 2.4in Output Signal: Switching Type Protection Grade: IP44 Linearity: 5(%F.S.) Hysteresis: 5(%F.S.) Repeatability: 0(%F.S.) Sensitivity: 100 Percent This product is a magnetoelectric tachometer, installed beside the flywheel of the engine, when the engine rotates, the tachometer senses an AC signal, the frequency of which is proportional to the engine speed. The speed sensor is used in conjunction with a tachometer (not included) to measure the engine speed. Package List:1 x Generator Speed Sensor Package List 1 x Generator Speed Sensor