Blue Sea M2 AC Multimeter 1838
This amazing multimeter monitors AC amps, volts, and Hzs on a large, bright display. It supports programmable current transformer ratios, allowing you to accurately measure and monitor AC amperage, voltage, and Hz (it can measure 2 voltages and 2 circuits).
Features:
- An auto - dimming, bright OLED display that's super easy to read
- Simple to adjust
- All models come with a 92dB alarm
- Isolated MOSFET relay for better performance
Specifications:- Meter functions: Current, Frequency, Power, Voltage
- Function range: 50 to 250V to 300A
- Alarms: High/Low Current, High/Low Frequency, High/Low Voltage
- Display Size: 55mm x 28mm
- Input Voltage: 7 - 70V DC
- Maximum Power Consumption: 1.00Watt
- Minimum Power Consumption: 0.3 Watt
WARNING: This product can expose you to chemicals including di(2 - ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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Owner's Manual (pdf)


Using the Blue Sea M2 AC Multimeter 1838 is quite straightforward. First, make sure the input voltage is within the 7 - 70V DC range. Then, you can start measuring AC amperage, voltage, and Hz. The large, bright OLED display will show you the readings clearly. You can adjust the settings easily to fit your needs. Remember, all models have a 92dB alarm, so if there's a high or low current, frequency, or voltage, you'll be alerted. As for maintenance, keep it in a dry and clean place. Try to avoid exposing it to extreme temperatures. Since this product can expose you to certain harmful chemicals, always follow the safety warnings on P65Warnings.ca.gov.