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Red handheld anemometer with telescoping probe and LCD display

TENMARS ELECTRONICS

TENMARS ELECTRONICS TM-4002 Hot Wire Anemometer 0.01-40 m/s 99 records electrician tool

SKU CH-P5MW-2ARNC MPN TM-4002

Measures air velocity from 0.01 to 40 m/s with a telescoping probe, stores 99 records, and calculates dew point and wet bulb

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Measures air velocity from 0.01 to 40 m/s with hot-wire precision
  • Stores up to 99 manual data records for later review
  • Calculates dew point and wet bulb values for HVAC diagnostics
  • Telescoping probe delivers fast response in ducts and vents
  • Large LCD shows speed in five units plus max/min/hold readings

Hot-Wire Anemometer for HVAC and Plant Maintenance

The Tenmars TM-4002 is a hot-wire anemometer designed to measure air velocity and calculate airflow volume. It captures data for HVAC system performance checks, commissioning work and plant maintenance routines. A telescoping probe provides fast response across a 0.01 to 40 m/s range. The unit stores up to 99 records in manual memory.

Suited for Duct Balancing and Environmental Checks

Technicians who need dew-point and wet-bulb calculations alongside velocity readings will find the TM-4002 useful. The large LCD shows maximum, minimum and held values in m/s, ft/min, km/h, knots and mph. Buyers who require continuous data logging or wireless transfer should look at other instruments. The meter runs on six AA batteries and weighs 250 g.

99-Record Manual Memory Decides Fit

The single specification that determines suitability is the 99-record manual memory. If your workflow demands more stored readings or automatic logging, this model will not meet that need. For spot checks and balancing tasks within the 99-record limit, the TM-4002 delivers the required data capture.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $260.99
Pricier than about 84% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameTENMARS
Model nameTM-4002
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What are the exact dimensions of the TM-4002 anemometer body?

The unit measures 156 mm long, 73 mm wide and 35 mm high, weighing 250 g, so it fits in a standard tool pouch or HVAC service case.

How do I power the TM-4002 for the first time, and what mistake should I avoid?

Insert six LR6 (AA) 1.5 V batteries observing the polarity markings inside the compartment; the common error is reversing one cell, which prevents the LCD from powering on.

When will the 99-record memory on the TM-4002 need attention, and what does that involve?

Memory fills after 99 stored readings; you must manually review and clear old records before logging new data, as the meter does not overwrite automatically.

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