1. Entwodiksyon
This manual provides instructions for the safe and effective use of the Sealey MM19 Digital Multimeter. The MM19 is a general-purpose multimeter designed for measuring various electrical parameters, including AC and DC voltage, DC current, resistance, audible continuity, and diode/transistor verification. Please read this manual thoroughly before operation and retain it for future reference.
2. Enfòmasyon sou Sekirite
Always observe basic safety precautions when using electrical test equipment to reduce the risk of fire, electric shock, or personal injury. This device complies with IEC 1010 and CE CAT II safety standards.
- Pa depase limit maksimòm antre yo pou nenpòt fonksyon. Gade seksyon espesifikasyon yo pou plis detay.
- Pa janm aplike voltage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
- Pran prekosyon lè w ap travay ak voltagpi wo pase 30V AC RMS, 42V pik, oubyen 60V DC. Sa yo voltages poze yon danje chòk.
- Ensure the test leads are in good condition, without cracked or broken insulation.
- Always connect the common (COM) test lead first and disconnect it last.
- Disconnect power to the circuit under test before measuring resistance or continuity.
- Ranplase batri a imedyatman lè endikatè batri fèb la parèt pou asire lekti egzak.
3. Pwodwi souview
The Sealey MM19 Digital Multimeter features a clear LCD display, a central rotary switch for function selection, and input jacks for test leads.

The Sealey MM19 Digital Multimeter, shown with its yellow casing, large LCD display, rotary function switch, and red and black test leads connected to the input jacks.
Eleman:
- Ekspozisyon LCD: Large (46 x 25mm) digital display for reading measurements.
- Rotary switch: Used to select the desired measurement function and range.
- Jack Antre VΩmA: Pou voltage, resistance, and current measurements up to 200mA.
- 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
- COM Antre Jack: Antre komen (negatif) pou tout mezi yo.
- Priz hFE: For transistor (NPN/PNP) testing.
- Plon tès: Red (positive) and Black (negative) leads for connecting to circuits.
4. Enstalasyon
4.1. Enstalasyon batri
The Sealey MM19 Multimeter requires a 9V battery for operation. If the display does not illuminate or shows a low battery indicator, the battery needs to be installed or replaced.
- Asire w ke miltimèt la etenn.
- Jwenn kouvèti konpatiman batri a sou dèyè aparèy la.
- Remove the screw(s) securing the cover and carefully lift it off.
- Connect a new 9V battery to the battery clips, observing correct polarity.
- Place the battery inside the compartment and replace the cover, securing it with the screw(s).
4.2. Konekte fil tès yo
The multimeter is supplied with a pair of test leads (red and black).
- Mete la black test lead nan la COM Jack antre (komen).
- Pou pifò mezi (voltage, resistance, low current), insert the red test lead nan la VΩmA jack antre.
- For high DC current measurements (up to 10A), insert the red test lead nan la 10ADC jack antre.
5. Operasyon Enstriksyon
To operate the multimeter, select the desired function and range using the rotary switch.
5.1. Mezire Volim DCtage (DCV)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired DCV range (e.g., 200m, 2000m, 20, 200, 1000). Start with the highest range if the voltage se enkoni.
- Connect the test leads across the component or circuit to be measured.
- Li voltage valè sou ekspozisyon LCD a.
5.2. Mezire AC Voltage (ACV)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired ACV range (e.g., 200, 750). Start with the highest range if the voltage se enkoni.
- Connect the test leads across the component or circuit to be measured.
- Li voltage valè sou ekspozisyon LCD a.
5.3. Measuring DC Current (DCA)
- For currents up to 200mA: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- For currents up to 10A: Insert the red lead into the 10ADC jack and the black lead into the COM jack.
- Set the rotary switch to the desired DCA range (e.g., 200μ, 2000μ, 20m, 200m, 10A). Start with the highest range if the current is unknown.
- Fèmen kouran nan kous la. Open the circuit where the current is to be measured.
- Konekte miltimèt la an seri ak sikwi a.
- Mete kouran nan sikwi a epi li valè aktyèl la sou ekran LCD a.
5.4. Mezire Rezistans (Ω)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired Resistance (Ω) range (e.g., 200, 2000, 20k, 200k, 2000k).
- Asire w ke sikwi ki anba tès la pa gen enèji.
- Konekte fil tès yo atravè konpozan ou vle mezire a.
- Li valè rezistans lan sou ekran LCD a.
5.5. Tès kontinwite ki tande
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the continuity symbol (speaker icon).
- Asire w ke sikwi ki anba tès la pa gen enèji.
- Konekte fil tès yo atravè konpozan an oswa fil la.
- If continuity exists (low resistance), the meter will emit an audible tone. The display will show the resistance value.
5.6. Diode/Transistor Verification Mode (hFE)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack for diode testing.
- Mete switch rotary la sou senbòl dyòd la.
- Connect the red lead to the anode and the black lead to the cathode of the diode. The display will show the forward voltage drop. Reverse the leads; the display should show 'OL' (open loop) for a good diode.
- For transistor hFE measurement, insert the transistor leads (Emitter, Base, Collector) into the appropriate sockets (E, B, C) in the hFE test socket, ensuring correct NPN or PNP type selection.
- Li valè hFE a sou ekran LCD a.
6. Antretyen
6.1. Netwayaj
Siye mèt la casing ak piblisiteamp twal ak yon savon dou. Pa sèvi ak pwodui abrazif oswa solvang. Asire w ke mèt la byen sèk anvan w itilize li.
6.2. Ranplasman batri
Refer to Section 4.1 for battery installation instructions. Replace the 9V battery when the low battery indicator appears on the display to maintain measurement accuracy.
NAN. Depanaj
- Pa gen ekspozisyon: Tcheke enstalasyon batri a epi asire w ke batri a gen ase chaj.
- 'OL' or '1' on Display: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
- Lekti ki pa kòrèk: Ensure the correct function and range are selected. Check test lead connections and battery condition.
- Pa gen ton kontinuite: Verify the circuit is de-energized and the leads are making good contact.
8. Espesifikasyon
| Paramèt | Valè |
|---|---|
| Mak | Sealey |
| Nimewo Modèl | MM19 |
| Sous pouvwa | Batri Powered (9V) |
| Ekspozisyon | Digital LCD (46 x 25mm) |
| DC Voltage (DCV) | 200mV, 2000mV, 20V, 200V, 1000V |
| AC Voltage (ACV) | 200V, 750V |
| DC aktyèl (DCA) | 200µA, 2000µA, 20mA, 200mA, 10A |
| Rezistans (Ω) | 200Ω, 2000Ω, 20kΩ, 200kΩ, 2000kΩ |
| Kontinwite | Audible tone below approx. 30Ω |
| Tès dyòd | Pi devan voltage drop display |
| Tès tranzistò | hFE (NPN/PNP) |
| Rating sekirite | CE CAT II, IEC 1010 |
| Dimansyon (L x W x H) | 1.93 x 4.21 x 6.06 pous |
| Pwa atik | 9.5 ons (0.27 kilogram) |
9. Garanti ak sipò
For warranty information or technical support, please refer to the documentation provided with your purchase or contact Sealey customer service directly. Keep your proof of purchase for any warranty claims.





