# Amprobe DM78C Digital Multi-Tester # Amprobe DM78C Digital Multi-Tester ## Key Features At A Glance - Maximum input 600 V DC or AC rms across all functions and ranges - 5 functions and 16 ranges covering DC/AC voltage, resistance, diode test, and continuity - 3200-count display with analog bargraph - Autoranging with manual range lock - Data Hold plus Auto-OFF after 10 minutes of non-use to conserve battery - Up to 70 hours continuous operation on two 1.5 V L1154F or LR-44 cells - Compact 130 x 77 x 18 mm, 110 g including case; protective case included - Continuity check with audible beeper alert The Amprobe DM78C is a handheld digital multi-tester built around a 3200-count display with an analog bargraph. Described as a smallest, go-anywhere meter, it packs five measurement functions across sixteen ranges into a pocket-sized body and ships with a protective case included. The DM78C measures DC and AC voltage, measures resistance, performs diode testing, and checks continuity, making it a general-purpose handheld for routine electrical measurement. Its compact dimensions and included pocket carrying case suit it to portable use where a full-size bench meter would be impractical. ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. ## Accessories Supplied - Pocket carrying case - Test leads - Battery - User's manual ## Product Core & Specifications Specification Value DC Voltage Ranges 340 mV, 3.4, 34, 340, 600 V Accuracy (3.4 V range) ±1.0 % rdg + 2 dgts Accuracy (all other ranges) ±2.0 % rdg + 2 dgts Resolution 100 µV in 340 mV range Input Impedance (340 mV range) \> 100 MΩ Input Impedance (3.4 V range) 10 MΩ Input Impedance (all other ranges) 9.1 MΩ AC Voltage (50~60 Hz) Ranges / Accuracy 3.4, 34, 340, 600 V — ±4.0 % rdg + 5 dgts Resolution 1 mV in 3.4 V range Input Impedance (3.4 V range) 10 MΩ Input Impedance (all other ranges) 9.1 MΩ Resistance Ranges 340 Ω, 3.4, 34, 340 kΩ, 3.4, 34 MΩ Resolution 100 mΩ in 340 Ω range Accuracy (340 Ω, 3.4, 34, 340 kΩ ranges) ±2.0 % rdg + 4 dgts Accuracy (3.4 MΩ range) ±3.0 % rdg + 4 dgts Accuracy (34 MΩ range) ±5.0 % rdg + 5 dgts Test Voltage \-0.45 Vdc typical (-1.2 Vdc on 340 Ω rng) Diode Test Range / Accuracy 3.4 V — ±3.0% rdg + 3 dgts Test Current 0.6 mA (Vf = 0.6 V) Continuity Check Range 340 Ω Indication at approx R < 35 Ω Test Current 0.7 mA General Display 3¾ digits LCD, max reading 3400 Range selection Autoranging and manual range lock Overrange indication OL Polarity indication \- is displayed; + is implied Battery warning Displayed when < 1.25 V ±0.1 V Sampling rate 2/sec display, 20/sec bargraph Maximum input (all functions/ranges) 600 VDC or AC rms Environment Indoor operation, 2000 m (6561 ft) max Temperature/Humidity (Operation) 0 ºC to 40 ºC (32 ºF to 104 ºF), < 70 % RH non-condensing Temperature/Humidity (Storage) \-20 ºC to 60 ºC (-4 ºF to 140 ºF), < 80 % RH non-condensing Battery type Two 1.5 V (L1154F or LR-44) Battery life 70 hours continuous operation Continuity test Beeper alert Auto-OFF After 10 minutes of non-use Dimensions (H x W x D) 130 x 77 x 18 mm (5.1" x 3.1" x 0.6") Weight (including battery) 110 g (3.9 oz) including case > **Important:** Maximum input: 600 V DC or AC rms (all functions and ranges). > **Important:** No Hassle warranty: any local Amprobe dealer is authorized to replace the tool on the spot (note: $500 MSLP limit). ## About this New unit This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 77.99 USD - **Vendor:** Amprobe - **Type:** Multi Met - **Tags:** Amprobe, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_2, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 77.99 USD | In stock | ## Images - DM78C Amprobe Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/dm78c-amprobe-multimeter-new) > Updated: 2026-06-27