Digital Tachometer,DC8-24V 30mA 4 Digital Red/Blue LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN (Red)

• ✔ 【Upgrade Material】 - Digital LED tachometer adopts the latest A / D conversion chip and the high stability benchmark IC, adopts electronic chip component, reasonable circuit design.
• ✔ 【Widely Application】 - It can be applied to the measurement of voltage, current and external sensor to measure temperature, pressure, displacement and other physical quantities. Suitable for all kinds of digital instrument display.
• ✔ 【Product Advantages】 - The external appearance adopts standard size and convenient to install. Good stability, high precision and strong anti-interference ability.
• ✔ 【Main Parameters】 - Input pulse NPN / PNP open collector, contact switch, contactless switch, level pulse. Input voltage: low level: -30V -0.6 V, high level: 4-30V. Measuring range: frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection.
• ✔ 【Perfect After-sales Service】 - We cherish every customer and commit to providing you with good service. If you have any questions about quality and instructions during use, we will be happy to assist you.

Descriptions: Digital LED tachometer adopts the latest A/D conversion chip and the high stability benchmark IC, adopts electronic chip component, reasonable circuit design. It can be applied to the measurement of voltage, current and external sensor to measure temperature, pressure, displacement and other physical quantities. Suitable for all kinds of digital instrument display. Specifications: Measurement accuracy: ±0.1% Display mode: 0.56"LED Display refresh rate: >3 times/sec Working power supply: DC8-24V, 30mA, measurement range: 10-9999RPM Hall proximity switch : magnetic Appearance size: 80 x 42 x 25mm/3.14 x 1.65 x 0.98inch LED display(Optional): red, blue Weight: 80g(red),105g(blue) Overrange display: the first one shows "1" or "-1", and the latter three do not show Package Included: 1 x Tachometer 1 x Hall NPN proximity sensor