Tachometer 4 Digital Red/Blue LED RPM Speed Meter+Hall Proximity Switch Sensor NPN(Blue)
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Good stability, high precision and strong anti-interference ability Measuring range: frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection The external appearance adopts standard size and convenient to install Input pulse signal: NPNPNP open collector ,contact switch, contactless switch, level pulse Input signal voltage: low level: -30V -0.6 V, high level: 4-30V
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Amazon
Good stability, high precision and strong anti-interference ability Measuring range: frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection The external appearance adopts standard size and convenient to install Input pulse signal: NPNPNP open collector ,contact switch, contactless switch, level pulse Input signal voltage: low level: -30V -0.6 V, high level: 4-30V
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Good stability, high precision and strong anti-interference ability Measuring range: frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection The external appearance adopts standard size and convenient to install Input pulse signal: NPNPNP open collector ,contact switch, contactless switch, level pulse Input signal voltage: low level: -30V -0.6 V, high level: 4-30V
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