1. Entwodiksyon
This manual provides instructions for the safe and effective use of the Extech MM750W Datalogging True RMS Multimeter. The MM750W is a robust, full-featured multimeter designed for professional use, offering 14 functions including non-contact AC voltage detection and Type K temperature measurements. Its CAT IV safety rating ensures protection in industrial environments. A key feature is its wireless datalogging capability via Bluetooth, allowing real-time data transmission to smart devices using the ExView W-Series app.

Figi 1: Devan view of the Extech MM750W Datalogging True RMS Multimeter, showing the display, function dial, and input jacks.
2. Enfòmasyon sou Sekirite
WARNING: Read and understand all safety information and operating instructions before using this meter. Failure to do so may result in serious injury or death.
- Toujou respekte kòd sekirite lokal ak nasyonal yo.
- Pa sèvi ak mèt la si li sanble domaje oswa si fil tès yo domaje.
- Asire w ke switch fonksyon an nan bon pozisyon pou mezi w ap fè a.
- Observe all terminal ratings and never exceed the maximum input limits.
- Pran prekosyon lè w ap travay ak voltagki pi wo pase 30V AC RMS, 42V pik, oubyen 60V DC, paske sa yo poze yon danje pou elektrisite.
- Mete ekipman pwoteksyon pèsonèl (PPE) ki apwopriye, tankou linèt sekirite ak gan izole.
- The MM750W is rated for CAT IV 600V and CAT III 1000V. Understand the implications of these categories for safe measurement.
3. Karakteristik kle
- Wireless Datalogging: Records and transmits over 15,000 readings to iOS and Android devices via Bluetooth Datalogging Module (DAT12) for remote viewing using the free ExView W-Series app.
- 14 Measurement Functions: Includes AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode Test, Continuity, Non-Contact AC Voltage (NCV), and Type K Temperature.
- Vrè RMS: Provides accurate AC measurements for non-sinusoidal waveforms.
- AC µA Function: Ideal for HVAC flame rod current measurements.
- Capture Done: Allows snapshots of the measurement area with a connected smartphone or tablet camera to document date/time stamps and measurement data.
- Evalyasyon sekirite CAT IV: Provides enhanced protection in industrial environments.
4. Ki sa ki nan bwat la
Verifye ke tout atik yo prezan epi yo pa domaje lè w ap debale yo:
- Extech MM750W Multimeter
- Test Leads (one red, one black)
- Type K Bead Wire Temperature Probe
- Bluetooth Datalogging Module (DAT12)
- 9V Battery (installed or separate)
- Ka mou pou pote

Figure 2: The Extech MM750W Multimeter shown with its complete set of accessories, including test leads, a Type K temperature probe, the DAT12 Bluetooth module, and a soft carrying case.
5. Enstalasyon
5.1. Enstalasyon batri
- Asire w ke mèt la etenn.
- Jwenn konpatiman pil la sou dèyè mèt la.
- Sèvi ak yon tournevis pou retire vis ki kenbe kouvèti batri a.
- Retire ak anpil atansyon kouvèti batri a.
- Connect a 9V battery to the battery clips, observing correct polarity.
- Mete pil la nan konpatiman an epi remete kouvèti a, byen sere l ak vis la.
5.2. Test Lead Connection
Always connect the test leads correctly for the desired measurement function.
- Pou pifò volimtage, resistance, continuity, and diode measurements, insert the red test lead into the VΩµA input jack and the black test lead into the COM input jack.
- For current measurements up to 600mA, insert the red test lead into the VΩµA input jack and the black test lead into the COM input jack.
- For current measurements up to 10A, insert the red test lead into the 10A input jack and the black test lead into the COM input jack.

Figi 3: Dèyè view of the Extech MM750W Multimeter, showing the integrated test lead holders and the battery compartment cover. The test leads are shown connected and stored.
5.3. Bluetooth Datalogging Module (DAT12)
The DAT12 module enables wireless communication with smart devices.
- Insert the DAT12 module into the dedicated port on the top of the multimeter.
- Download the free ExView W-Series app from your device's app store (iOS or Android).
- Pèmèt Bluetooth sou aparèy entelijan ou.
- Louvri ExView W-Series app and follow the on-screen instructions to pair with the MM750W.
6. Operasyon
6.1. Mezi debaz yo
Turn the rotary switch to the desired function. The display will show the measurement value.
- Voltage (V~, V-): Chwazi AC oswa DC voltage. Connect test leads in parallel with the circuit.
- Current (A~, A-): Select AC or DC current. Connect test leads in series with the circuit. Ensure correct input jack (µA/mA or 10A).
- Rezistans (Ω): Turn off power to the circuit. Connect test leads across the component.
- Kontinwite ()))): Turn off power. Connect test leads across the circuit. A tone indicates continuity.
- Tès dyod (→|): Turn off power. Connect test leads across the diode.

Figure 4: An electrician safely measuring voltage within an electrical panel using the Extech MM750W Multimeter. The meter's display is visible, showing a reading.
6.2. Fonksyon avanse
- Non-Contact AC Voltage (NCV): Position the top of the meter near an AC voltage source. The NCV indicator will illuminate, and an audible tone will sound if AC voltage detekte.
- Type K Temperature (Temp): Insert the Type K bead wire probe into the VΩµA and COM jacks (observing polarity). Select the temperature function.
- MAX / MIN: Press the MAX/MIN button to record the maximum and minimum readings during a measurement session.
- Mòd Relatif (REL): Press the REL button to store the current reading as a reference and display subsequent measurements as a deviation from this reference.
- Frequency/Duty Cycle (Hz/%): Select the appropriate function to measure frequency or duty cycle of an AC signal.

Figure 5: A technician using the Extech MM750W Multimeter with its Type K temperature probe to measure the temperature of a furnace flue, demonstrating the meter's temperature measurement capability.
6.3. Datalogging and Bluetooth Connectivity
ExView W-Series app enhances the functionality of your MM750W.
- Ensure the DAT12 module is connected and the meter is paired with your smart device via the ExView W-Series app.
- Nan aplikasyon an, ou kapab view real-time readings, initiate datalogging sessions, and configure logging intervals.
- The app allows you to generate reports, analyze collected data, and add notes or photos (taken with your smart device camera) to specific readings for comprehensive documentation.
- Your smart device can also serve as a second display for convenient viewing or sharing of measurements from a safe distance.
7. Antretyen
7.1. Netwayaj
Siye bwat mèt la ak piblisiteamp twal ak yon savon dou. Pa sèvi ak pwodui abrazif oswa solvan. Asire w ke mèt la byen sèk anvan w itilize li.
7.2. Ranplasman batri
When the battery symbol appears on the display, replace the 9V battery as described in Section 5.1. Prompt battery replacement ensures accurate readings and proper meter function.
NAN. Depanaj
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Kontè a pa limen. | Batri ki mouri oswa mal enstale. | Replace or correctly install the 9V battery. |
| Lekti ki pa kòrèk. | Incorrect function selected; damaged test leads; low battery. | Verify function switch position; inspect/replace test leads; replace battery. |
| Pwoblèm koneksyon Bluetooth. | DAT12 module not properly inserted; Bluetooth disabled on smart device; app not open. | Ensure DAT12 is fully inserted; enable Bluetooth; open ExView W-Series app and retry pairing. |
| "OL" displayed. | Overload, measurement exceeds meter's range. | Ensure measurement is within the meter's specified range for the selected function. |
9. Espesifikasyon
| Paramèt | Valè |
|---|---|
| Nimewo Modèl | MM750W |
| Mak | Extech |
| Dimansyon pwodwi | 2.2 x 7.7 x 3.7 pous |
| Pwa atik | 16 ons (1 liv) |
| Sous pouvwa | Batri Powered (9V) |
| Rating sekirite | CAT IV 600V, CAT III 1000V |
| Kapasite anrejistreman done | 15,000 lekti |
| Koneksyon | Bluetooth (via DAT12 module) |
| Vrè RMS | Wi |
| Non-Contact AC Voltage (NCV) | Wi |
| Mezi Tanperati | Kalite K |
10. Garanti ak sipò
Extech Instruments provides a warranty for this product against defects in materials and workmanship. Specific warranty terms and duration may vary by region and purchase date. Please refer to the warranty card included with your product or visit the official Extech websit pou enfòmasyon detaye sou garanti.
For technical support, service, or replacement parts, please contact Extech Customer Service. Contact information can typically be found on the Extech websit la oubyen nan dokiman ki akonpaye pwodwi w la.





