Features: 1.Application: Generator rotational speed sensor has stable performance, specially designed for magnetic generator pickup, perfect fit. 2.Thread Design: This magnetic generator speed sensor adopts threaded design, 3/8 24UNF 2A, easy to install, good accessory for generator. 3.Quick Response: Professional manufacturing, MSP6729 rotational speed sensor has excellent sensitivity and high reliability, practical to use. 4.Sturdy Aluminium Alloy: 24 UNF rotational speed sensor is made of high strength aluminium alloy material, lightweight, rustproof, durable to use. 5.Ideal Replacement: Strictly following the factory quality control, generator speed sensor is a great and direct replacement for the old or damaged one. Specification: Item Type: Rotational Speed Sensor_x000D_ Material: Aluminium Alloy_x000D_ Introduction:_x000D_ The magnetic speed sensor indicates when ring gear teeth, or other ferrous projections, pass the tip of the sensor. _x000D_ Electrical impulses are induced within the coil and sent to the speed control unit. The signal from the magnetic speed Sensor, teeth per second(HZ), is directly proportional to engine speed._x000D_ Description:_x000D_ The magnetic speed sensor is mounted in the ring gear case or flywheel bell housing of the engine. _x000D_ The threaded hole for the speed sensor should be perpendicular to the center line of the crankshaft and centered over the ring gear teeth. _x000D_ A spot face should be present to provide a flat surface on which to anchor the locknut. _x000D_ With the engine stopped, screw the speed senor in until it touches a gear tooth, then back it out 3/4 of a turn and secure it with the locknut. _x000D_ Any ferrous gear may be used as long as the frequency and amplitude of the resulting signal meet the speed control unit specifications_x000D_ The wire leads should be twisted for their entire length from the magnetic speed sensor to the control unit. _x000D_ The leads may need shielding if they are longer than 10 ft. (3 meter), or if external interference is present._x000D_ Do not connect either of the speed sensor leads to anything but the speed control unit used. The shield should not be connected at the speed sensor end._x000D_ Specification:_x000D_ MSP6729_x000D_ 3/8 - 24 UNF Threaded_x000D_ 2.5in Length with 6ft Shielded Cable_x000D_ All are designed and tested to operate within a temperature range of -65 to 225 (-55 to 105) . PackageList: 1 x Sensor