MUL-115 - Multimeter Steren - Free user manual and instructions
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| Type of product | Digital multimeter |
| Brand | Steren |
| Model | MUL-115 |
| Display | 3 1/2-digit LCD with 2000 counts |
| DC voltage range | 200 mV, 2 V, 20 V, 200 V, 600 V |
| AC voltage range | 200 V, 600 V |
| DC current range | 200 µA, 2 mA, 20 mA, 200 mA, 10 A |
| Resistance range | 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ |
| Diode test | Yes |
| Continuity buzzer | Yes |
| Transistor test | Yes (hFE) |
| Overload protection | Fusible protection on current ranges |
| Safety rating | CAT II 600 V |
| Power supply | 9 V battery (NEDA 1604A or 6F22) |
| Dimensions (W × H × D) | 70 × 150 × 30 mm |
| Weight | 200 g (with battery) |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | -10 °C to 50 °C |
| Accessories included | Test leads, 9 V battery, user manual |
| Maintenance and cleaning | Wipe with a dry cloth; do not use solvents |
| Spare parts and repairability | No user-replaceable parts except battery; service by authorized technicians |
| General information | Compact, handheld multimeter for basic electrical diagnosis |
Frequently Asked Questions - MUL-115 Steren
How do I measure DC voltage?
Set the rotary switch to the DC voltage (V⎓) position. Connect the black test lead to the COM jack and the red test lead to the V/Ω jack. Touch the probes to the circuit in parallel and read the value on the display. Ensure the voltage does not exceed the maximum rated input of 600 V.
How do I measure AC voltage?
Set the rotary switch to the AC voltage (V~) position. Connect the test leads as for DC voltage. Touch the probes to the live and neutral points. The display shows the RMS value. Be careful and never measure above 600 V.
How do I measure resistance?
Turn off power to the circuit and discharge capacitors. Set the switch to the Ω range. Connect the probes and touch them to the resistor leads. Read the resistance value. If the display shows "1" or "OL", the resistance is higher than the selected range.
How do I test continuity?
Set the switch to the continuity position (usually a diode symbol with sound waves). Connect the test leads. Place the probes at two points. If the resistance is low (typically <30 Ω), the buzzer sounds, indicating a continuous connection.
How do I test a diode?
Set the switch to the diode test position. Connect the red lead to the anode and the black lead to the cathode. The display shows the forward voltage drop. For a typical silicon diode, this is about 0.6–0.7 V. Reverse the leads to check the reverse bias.
How do I replace the battery?
Turn the multimeter off and disconnect the test leads. Remove the screw on the back cover and lift off the battery compartment. Replace the old 9 V battery with a new one, ensuring correct polarity. Reattach the cover and screw.
Why does the display show "1" or "OL"?
"1" or "OL" means the reading exceeds the selected range or the input is open. Select a higher range or check the connections. For resistance, it means the resistor is open or too high for the range.
How do I measure DC current?
Set the switch to the DC current (A⎓) range. For currents up to 200 mA, connect the red lead to the mA jack; for currents up to 10 A, connect to the 10A jack. Insert the meter in series with the circuit. Never connect the current mode in parallel with a voltage source.
What safety precautions should I take?
Always observe the maximum CAT II 600 V rating. Do not measure voltages above the limit. Use proper test leads and inspect them for damage. Do not operate the meter with the back cover removed. Never use the meter in wet or explosive environments.
Can I measure electrical parameters in a car?
Yes, the meter can measure DC voltage, resistance, and continuity in automotive circuits. It is suitable for diagnosing battery voltage (around 12 V), sensors, and switches. Always connect the black lead to the vehicle's ground.
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USER MANUAL MUL-115 Steren
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Product information
Brand : Steren
Model : MUL-115
Category : Multimeter