Mini Digital Voltmeter 3 Digit 7 Seg Blue (No separate power supply required)
Easy to connect 2 wires, so there is no need to prepare a separate power supply for the voltmeter, just connect the red line (+) and black wire (-) to the part you want to measure the voltage.
The back has a semi-fixed resistance for calibration.
[Note]
·As this is a bulk product, packaging and instruction are not included.
Please do not mistake for polarity. (Red + Black-) (reverse connection protection circuit included)
Please use on items that do not exceed 30V. It may be damaged or burned.
Since the power is taken from the target measurements, it cannot be measured under 3.2 V.
Operating at 3.2 V or less will be unstable.
LED brightness gradually darkens at less than 4V.
The lead wire is secured by soldering only and is easy to remove. +/-lead wire mounting rands are neighbor, so they may be shortened if they are detached. If you have any concerns, please take measures such as tape fastening.
When using continuously for a long time, please pay attention to heat dissipation and cooling. (Operating Temperature: -14 - 145 °F (-10 - 65 °C)
The specifications of the measurement range provided by overseas shipping sources are [DC 3.2V-30V]. This may be calculated from the tolerance voltage and power consumption of the components used. Even if there is a momentary noise, if the maximum voltage is over 30V, the parts may be damaged or burned. Please consider using it with a lot of extra space.
·Cannot support usage and modification methods, etc.
Due to improvements, parts, circuits, circuit boards layout, etc. may be altered.