ReviewsAmmeter Small

Schumacher DSR140 200/50/25/10 Amp 12/24V Manual Wheel Charger

PROFESSIONAL GRADE: Powerful engine starter boasts 200 cranking amps (12V), which packs enough power to start cars, SUVs, trucks, boats, and other large engines.
50A 12V AND 25A 12V/24V BOOST MODES: The boost modes quickly bring deeply discharged batteries back to life.
PRECISION CONTROL: A 135-minute manual timer gives the user exacting control over the entire charging process.
WORKS WITH MANY BATTERY TYPES: The DSR140 is compatible with 12V and 24V standard, AGM, gel, and deep-cycle batteries.
EASY-TO-READ METER: Visually monitor charging levels with the built-in analog ammeter.

please check the power output meets the requirements if the MOS tube fever,and be sure to do a good job of cooling.Do not empty the board, otherwise it will create a very high noise, then MOS tube will burn out.
please do not to heat too large metal, otherwise it may be overloaded, please add a 35A fuse or ammeter and air switch for better use (not included)..

The DC voltage and ammeter can display the measured DC voltage and DC current simultaneously on the same meter screen..
Wide measurement voltage and current range, DC Voltage: DC0-199.9V.
The measured DC voltage and DC current are completely isolated within the meter..
Suitable for chargers, inverters, solar energy, wind driven generator, LED light measurement, etc..

...ent to quickly extract the voltage or current required. This module has many advantages, small size, advanced function, good visual effect, high operability, high-precision, being used independently, being inset into the device and been widely applied.
LCD display on the module has the function digital voltmeter and ammeter.You can view the preset voltage, input voltage, output voltage, the preset current, output current, output power, etc.
On the setting data interface, you can adjust over-voltage value, over-current value, over-power value, data set and LCD brightness. On the output state remind area, you can see that output opens or not, the state of constant voltage and constant current, output is normal or not, the key is locked or not, and the current data groups that is being used.

MFJ-931 creates an artificial RF ground! It resonates a random length of wire thrown along the floor and produces a tuned counterpoise. This ground effectively places your rig near actual earth ground potential even if your rig is on the second floor or higher with no earth ground possible..
Also, the MFJ-931 electrically places a far away RF ground directly at your rig -- no matter how far away it is. It reduces the electrical length of the ground connection wire to virtually zero by tuning out its reactance..
The MFJ-931 connects between your rig and a random length of wire or a connecting ground wire. Its tuned for maximum ground current using the built-in RF ammeter. The MFJ-931 Artificial RF Ground covers 1.8 - 30 MHz and measures a compact 7.5W x 3.5H x 7D inches..

Compact, portable and lightweight design.
Standard package includes set of stainless steel vacuum sealing flanges with valves and pressure meter.
Microprocessor based self-tuning PID control provides optimum thermal process with minimal overshoot.
Built-in ammeter and dual voltmeters for easy monitoring and troubleshooting.

Measures 0 to 60 Volts. Works on 12, 24, 36, and 48 volt battery bank systems..
Precision Alu-Chrom current sensing resistor, with only 0.001 Ohms resistance and circuitry that draws only 7 mA..
This is the All-In-One Meter:a power meter, a volt meter, an amp-hour meter, ammeter and energy meter.Digital LCD screen gives clear crisp number readings..
Perfect troubleshooting tool:it's indispensable for analyzing, testing and troubleshooting any DIY DC power project..
Professional RC Watt Meter is an excellent addition to your RC hobby, DC circuits, Solar system, Boat/RV & Battery Backup systems!.

2.2pcs Accurate Voltmeter Ammeter DC0-100V Voltage 10A Current Meter 2-in-1 Digital Multimeter 10A Volt Amp Tester Meter with 5 Wires 0.28" Red and Blue Dual LED Display.
4.Operating Humidity: 10 to 80% (non-condensing).

PARAMETER --- input voltage range DC 5V-36V.
output voltage DC 1.25V-32V continuously adjustable.
max output current 5A, recommend use of within 4.5A.
max power 75W, recommend use of within 50W..
MULTIMETER --- detect and display voltage, current, power, can be used as voltmeter/ammeter/power meter..
CC & CV MODE --- with constant current mode & constant voltage mode..
currently mode indicator & charging status indicator.

200 CRANKING AMPS OF ENGINE STARTING POWER: The SC1633’s engine start mode boasts 200 cranking amps (12V), strong enough to start cars, SUVs, trucks, boats, and other large engines.
50A AND 25A BOOST MODES: The boost modes—50A 12V, 25A 12V, and 25A 24V—quickly bring even deeply discharged batteries back to life.
WORKS WITH MOST BATTERY TYPES: The SC1633 is compatible with 12V and 24V standard, AGM, gel, and deep-cycle batteries.
EASY-TO-READ METER: The built-in ammeter allows you to visually monitor charging levels.
PRECISION MANUAL CONTROL: The charger’s 135-timer and manual rate selection give users complete control over the entire charging process.