4 Digital Green Rpm Speed Meter Tester with Hall Switch Sensor Npn Tachometer

Description

Item Description:
feature:
Good stability, high accuracy, and strong anti-interference ability.
The appearance adopts standard size, and it is easy to install.
Input touch signal: NPN/P NP set surface open circuit, contact switch non-contact switch, liquid level expression.
Input signal voltage: low voltage: -30V -0.6 V, high voltage: 4-30V.
Measuring range: Frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switch selection.
Specification:
Measurement accuracy: ±0.1%
Display mode: 0.56LED display
Refresh rate:> 3 times/sec
Working power supply: DC8-24V, 30mA,
Measuring range: 10-9999RPM
Hall proximity switch:
Appearance size: 80 x 42 x 25mm / 3.14 x 1.65 x 0.98inch
LED display: blue
Weight: 105 grams (blue)
Over-range display: the first one displays "1" or "-1", the last three do not display
Measures: 1. Correctly connect the plug according to the wiring diagram to prevent
2. Strong electromagnetic interference should be avoided, it is best to use shielded wire or double-stranded wire as necessary
3. The digitized calculation signal and clear signal or circuit switching application details are close to the car's terminal, the prototype of the data signal line
4. Avoid using the same pipe or twisted wires with other wires, such as high-voltage wires or power wires, to induce interference. If necessary, please use a shielded wire, and the shielding layer is connected to the "+" sign of the power cord. Counting terminal
5. Use switches or switch switches, because if their switches will be used by micro-moving machinery and will be used for a long time, please try to use better quality, suddenly count, and strongly recommend the use of magnetic control
Shipping
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-Your Item(s) will be shipped within 5-15 business days once payment received.
notice: item shipping from China.You should receive item within 4 weeks
-if you want faster shipping (Express,DHL or EMS),Please contact us.
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Return
We aim to provide you the good buying experience, 30 days return policy is offered in our store. Please follow our return policy before you return any item(s):
If you are unhappy with your purchase for any reason, you can return it to us in an un-used condition in the original packaging within 30 days of purchase and we'll give you a refund or exchange. Please note you MUST contact us to obtain a Return Authorization Number before returning any part. Any parcel without the Return Authorization Number will be rejected.
If your item is faulty or was incorrect, you must contact our sales representative before returning the parcel and we will endeavour to solve the problem effectively. Video or picture is required to show the item condition before we issue the Return Authorization Number.
Notice:
1. Any returned item(s) without Return authorization number will be rejected.
2. Please return your item(s) in original packaging and ensure that all packages are securely wrapped
3. We will not accept responsibility for loss or damage of goods during transit, please ensure that the insurance cover option is taken where possible
4. Upon receipt, all products will be inspected at our discretion in 3-5 business days. Then, the updated result will be informed.
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