New 4-Digital Led Tachometer Rpm Speed Meter + Hall Proximity Switch Sensor Npn

Description

Product Description
New 4-Digital Led Tachometer Rpm Speed Meter + Hall Proximity Switch Sensor Npn
Overview:
The digital panel meter adopts the latest A/D conversion chip and high-stability reference IC, and adopts chip components, and the circuit design is reasonable. It can be applied to the measurement of voltage and current, or it can be connected with external sensors to measure various physical quantities such as temperature, pressure and displacement. It should be used for display of various digital instruments. The product has good stability, high measurement accuracy and strong anti-interference ability. The exterior is standard in size and easy to install.
Features:
1. Input pulse signal: NPN open collector, contact switch, non-contact switch, level pulse
2. Input signal voltage: Low level: -30V-0.6V, High level: 4-30V
3. Measurement range: Speed: 10-9999RPM
Specifications:
1. Measurement accuracy: ± 0.1%, reading 1 word
2. Display mode: 0.56 blue LED
3. Four readings
4. Display refresh rate: > 3 times / sec
5. Working power: AC / DC8-24V, 40MA
6. The external dimensions: 79 × 42 × 32MM
7. Installation size: 76 × 39MM
8. Weight: about 50G
9. Over-range display: the first position shows "1" or "-1", the last three digits do not display
Precautions for use:
1. Connect the plug correctly according to the wiring requirements.
2. Should avoid strong electromagnetic interference, the measurement wire is best to use shielded wire or twisted pair.
3. The counter signal and the switch or circuit of the clear signal input should be as close as possible to the terminal of the counter to make the signal line as short as possible.
4. Avoid with other wires such as strong electric wires or power wires or stranded wires to avoid unnecessary interference. If necessary, use shielded wires and the shield is connected to the counting terminal “+”.
5. It is not recommended to use mechanical switches or micro switches, because their life is relatively short, it is easy to count down after a long time; if using mechanical switches or micro switches, please try to use better quality, so as not to count errors, strong Recommended magnetic switch.
Pacage Include:
1 × LED tachometer
1 × Hall Proximity Switch Sensor NPN
Note:
1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2.Please allow slight manual measurement deviation for the data.
Payment
We accept payment via Paypal only.
Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.
Delivery details
We only
ship to confirmed Paypal addresses.
Please comfirm that your paypal address is in line with your shipping address.
Please kindly note that
the c
ombined shipping
is not provided
because the shipping fee is calculated by weight. Also, the each additional item means
exactly
the the same color and size.
It takes about
7
-15 working days to US; about 10-30 working days to other countries.
Transit time may be a little delayed because of the
bad
weather and customs
inspection
. If you
do
not receive your
item
within 30 working days since payment finished, please contact us immediately for further assistance.
Contact us
We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions,
p
lease feel free to contact us via "Ask seller a question" . We will reply your email within 24
working hours.