This product is a multifunctional speed measuring / counting table with speed measuring function, counting function and upper limit alarm output function It is generally applicable to all kinds of mechanical equipment such as harvesters, fan,, where the speed of devices needs-to be measured The sensor of this product is a three-wire sensor, which adopts electronic technology, so that the sensor has high sensitivity, strong reliability, good anti-interference performance, stable in the growth period, and can be used for speed measurement and counting This product can output an NPN-alarm, and the user can connect an lamp-and a sound-generator for warning Users can customize the alarm field-value This product adopts hall sensor for speed measurement, and through the internal function of the program, probe-can be used to detect multiple-points, thus improving-the detection accuracy Multi-period average velocimetry is used for speed measurement, which has a wide low-speed and high-speed measurement range-and excellent measurement accuracy The counting function is realized by the external counting function of the-timer of the single chip microcomputer, and the counting is stable and r This product is compatible-for Hall switch, metal proximity switch, infrared-proximity switch and other detection switch signals, Manufacturer: UncleS