The DT700 is one of the most searched digital multimeter model series in wholesale catalogs — and one of the most imitated. Marketplaces are full of cheap meters stamped “DT700” that share nothing with the genuine series but the name. This guide shows what a real DT700 series meter should offer, how the three models DT700B, DT700C and DT700D differ, and what to check before you order in bulk.
The DT700 series is a professional digital multimeter line from CHINYOO — a factory-direct instrument manufacturer in Wenzhou, China. Its three models (DT700C, DT700D, DT700B) share ±0.5% DCV accuracy, and the DT700C adds temperature measurement up to 1000°C.
DT700C vs DT700B vs DT700D
All three share the same body, display, ranges and accuracy. The table below shows where they differ.
| Function | DT700B | DT700C | DT700D |
|---|---|---|---|
| DCV accuracy | ±0.5% | ±0.5% | ±0.5% |
| Temperature measurement | — | -20°C ~ 1000°C (±2.0%) | — |
| Square-wave output (50Hz) | — | — | Yes |
| Continuity buzzer | — | Yes | Yes |
| Transistor test | — | Yes | Yes |
| Thermocouple included | — | Yes | — |
| Weight | ~120g | ~130g | ~120g |
If your customers test heating, ventilation and air-conditioning equipment, the temperature function of the DT700C turns one meter into an electrical and HVAC tool — see the measurement steps below. If they need a signal source for tracing audio or control lines, the DT700D’s square-wave output is the differentiator. For pure voltage, current and resistance work, the DT700B is the value choice.
DT700 Series at a Glance
The DT700 series is our compact 1999-count digital multimeter line: 128×72×29mm, powered by a single 9V battery, with a large 60×33mm display. All three models share the same core electrical specification — DC voltage accuracy of ±0.5% across a 1000V range, AC voltage to 750V, DC current to 10A and resistance to 2MΩ — so the series behaves consistently whichever model you stock.
The models split by extra function: the DT700C adds temperature measurement to 1000°C with the included thermocouple, the DT700D adds a 50Hz square-wave output for signal testing, and the DT700B is the straightforward entry model. For work that pairs with a higher-spec line, see our professional digital multimeter range.
Key Features & Specifications
These are the specifications every genuine DT700 series meter shares:
- DCV: 200mV / 2000mV / 20V / 200V / 1000V, accuracy ±0.5%
- ACV: 200V / 750V, accuracy ±1.0%
- DCA: 200µA / 2000µA / 20mA / 200mA / 10A, accuracy ±1.8%
- Resistance: 200Ω / 2000Ω / 20kΩ / 200kΩ / 2000kΩ, accuracy ±1.0%
- Display: 1999 counts, 60×33mm LCD
- Overload protection and low-battery indication on all models
- Diode test on all models; continuity buzzer and transistor test on DT700C and DT700D
- Power: one 9V 6F22 battery · Size: 128×72×29mm · Weight: about 120–130g
Specification numbers are easy to exaggerate in this price bracket. Learn to read every dial symbol so the meters you stock are correctly specified — see our multimeter symbols guide, and confirm the safety category matters in our CAT rating explained.
How to Use the Temperature Function (DT700C)
Temperature measurement is the feature buyers ask about most, and the DT700C is our answer to the constant searches for a “digital multimeter with temperature measurement”. It works with the thermocouple probe included in the box:
- Turn the dial to the temperature position.
- Plug the thermocouple into the meter’s probe input — the connector is keyed, so it only fits one way.
- Touch the thermocouple tip to the surface or into the air stream you want to measure.
- Read the temperature directly in °C. The DT700C measures from -20°C to 1000°C with ±2.0% accuracy.
For HVAC service, verify return and supply air temperatures, refrigerant lines and motor surface temperatures in one pass. A multimeter with a temperature probe replaces a separate thermometer on most jobs.
How to Choose a DT700 for Your Business
Buying the DT700 series for resale or OEM is straightforward if you check the same points you would for any multimeter line: factory base, certification, customization, quality control, warranty and samples. We walk through each one in our factory vs trading company guide and our how to choose a digital multimeter article.
For the DT700 specifically, verify the accuracy figures against the datasheet, confirm CE (EMC · LVD) and RoHS documentation, and ask for a sample unit before committing to a container. A serious factory sends samples first — see the checklist in how to choose a multimeter manufacturer in China. Also plan your model mix: many distributors stock DT700C and DT700B as the two volume sellers, then add DT700D for customers who need a signal source.
Ordering a DT700 Sample Before You Commit
You do not have to take a datasheet on trust. Order a single DT700C sample, check the ±0.5% DC voltage accuracy against a reference meter, confirm the CE (EMC · LVD) and RoHS paperwork, and test the temperature probe on a known source. If the unit matches the spec, scale up with the model mix that sells: DT700C and DT700B as the two volume lines, plus DT700D for customers who need a signal source.
Browse the DT700 series product page for the full model list and specifications, or send us the models and quantities you need via the form below — we reply with pricing and lead time within 24 hours, and we ship samples before bulk orders.
Related reading: DT830 Digital Multimeter: Complete How-to-Use Guide, How to Use a Multimeter: A Practical Guide for Electricians and Buyers