Xin Si Cheng Technology
Automotive Digital Multimeter with Rotational Speed Measurement 2900B

New 2900B counts digital automotive multimeter is well designed with convenient operation, accurate reading, true RPM, clear full symbol LCD display and complete functions. The meter not only uses the latest software design, automatic calibration, high precision, good stability and new protective sleeve, but also has magnetic suction function, large screen LCD, backlight function and flashlight function, which is suitable for dark light environment. "V" jack input is internally connected with PTC thermal-sensitive elements, which can protect the core parts of the meter sufficiently and greatly improve the safety and service life of the product. The meter can measure DC voltage/current, AC voltage/current, resistance, capacitance, frequency, temperature, speed, closing angle, lamp test, positive and negative pulse, crystal diode, triode parameters and circuit on and off.
The product is suitable for vehicle maintenance and debugging, and is your ideal measuring tool.



1. Low power consumption  CMOS Double integral A/D conversion integrated circuit, automatic zeroing, automatic polarity display, data retention, low battery and over range indicator.

2. DC basic accuracy: ±0.5%

3. Capacitance measurement: 10pF~100mF

4. Temperature measurement: -40℃  ~1000℃

5. Full overload protection function.

6. Backlight function: applicable to the dark environment.

7.Auto Power Off: turn off the power automatically about 15 minutes after starting, in case of forgetting to switch off the power when the meter is used.

8. Maximum display: 5999。

9. LCD: 63X40mm large screen, high contrast, full symbol

display, words height 25mm, clear and artistic.

10.Power Supply: one 9V battery(NEDA1604、6F22 type or equivalent type).

11.Low battery voltage indication: at LCD left part shows“”symbol.

12. Size:180x88x53mm。

13.Weight: about 359g (including battery, protective cover).

14. Environment condition:

working temperature:0℃~40 ℃                  relative humidity< 85%

Storage temperature:-10 ℃ ~50 ℃             relative humidity< 85%

Guaranteed accuracy temperature:23 ℃ ±5 ℃   relative humidity< 75%


 Technical Specifications

Accuracy: (%Reading ± Words) The guarantee period is one year.

Environmental temperature: 23℃±5℃

Relative humidity: < 75%



1. User's manual 1 pc

2. Guaranty card 1 pc

3. One rubber sheaths (with iron suction)

4. Test lead 1 pair with clip

5. K type simple thermocouple (with plug)

6. KV sensor