1. The product adopts 32-bit microcontroller and graded M/T speed measuring algorithm, taking into account the high and low speeds. 2. The product has both speed measurement and counting function, which can be used as both speed measurement and counter. 3. The product can be mounted on the guide rail or screw-fixed, and can be connected to the sound and light alarm device, which is very convenient to use. 4. The product has RS485 MODSBU communication function, which can communicate with PLC and other controllers. 5. High-speed optocoupler is used for isolation to increase the anti-interference ability 6. 6-bit 0.56-inch large digital tube, the display is clearer Product name: five-way speed checker Working voltage: DC12-24V Measurement mode: non-contact measurement Host current: 30mA Waterproof and dustproof: no Color:As Shown Material:ABS Package Contents: 1 * Non-contact motor speed tachometer Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.