4 Digital LED Display Hall Effect Sensor Tachometer RPM Speed Meter Digital Lathe RPM Gauge NPN Inductive Proximity Switch (Blue)
by Walfront
- ✔ Measure varied motor RPM Measure range: 10-9999 RPM, ✔ Come with hall sensor and magnet, good stability, high and strong anti-interference ability, ✔ Input pulse : NPN/PNP open collector ,contact switch, contactless switch, level pulse Input voltage: low level: -30V -0.6 V, high level: 4-30V, ✔ The external appearance adopts standard size, convenient to install and easy to use, ✔ Measuring range: frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection