Testo 405i Hot Wire Anemometer Wireless Smart Probe

Description

The Testo 405i is a professional-grade hot-wire anemometer engineered for high-precision measurement of air flow velocity, volume flow, and temperature. As part of the Smart Probes series, it eliminates the need for integrated displays, instead utilizing Bluetooth® connectivity to transmit real-time data to the Testo Smart App. This Original Engineering approach allows for remote monitoring in hard-to-reach ventilation ducts and complex HVAC systems.

Manufacturer: Testo
Model: 405i
Product Category: Thermal Anemometer Smart Probe

Technical Specifications:
Measuring Range (Velocity): 0 to 30 m/s
Accuracy (Velocity): ±(0.1 m/s + 5 % of mv) (0 to 2 m/s); ±(0.3 m/s + 5 % of mv) (2 to 15 m/s)
Resolution (Velocity): 0.01 m/s
Measuring Range (Temperature): -20 to +60 °C
Accuracy (Temperature): ±0.5 °C
Resolution (Temperature): 0.1 °C
Operating Temperature: -20 to +50 °C
Storage Temperature: -20 to +60 °C
Battery Type: 3 x AAA Micro
Battery Life: 15 hours
Telescopic Shaft Length: 400 mm
Dimensions: 200 x 30 x 41 mm
Weight: 119.6 g
Data Transmission: Bluetooth® 4.0
Wireless Range: Up to 100 m
System Requirements: iOS 8.3 or newer; Android 4.3 or newer

Operational Application:
This instrument is specifically designed for volumetric flow calculations and thermal comfort assessments. In industrial HVAC commissioning, the 405i solves the challenge of measuring air velocity in large-diameter ducts where traditional handheld units are cumbersome. The extendable 400 mm telescope allows for precise positioning within the laminar flow profile, ensuring Technical Compatibility with standard ventilation grilles and diffusers. The app-integrated logic automatically calculates volume flow based on user-defined duct geometry, reducing manual calculation errors during system balancing.

Lifecycle and Integration:
Built for durability in commercial environments, the 405i features a robust housing and a sensitive thermal sensor protected by a retractable cap. For procurement planning, standard Lead Time is subject to regional stock availability. The device is essential for facility managers and HVAC technicians requiring a compact, digital-first solution for airflow diagnostics and energy efficiency auditing.

Key Attributes
Type: Wireless anemometer
Place of Origin: China
Model Number: 405i
Brand Name: Testo
Product name: Testo
Model: 405i
Hot Wire Sensor Measuring Range: 0 to 6,000 fpm
NTC Measuring Range: -4 to 140°F (-20 to 60°C)
Accuracy: ±0.9°F (±0.5°C)
Operating Temperature: -4 to 122°F (-20 to 50°C)
Battery Type: 3 AAA Batteries (included)
Battery Life: 15 hours
Dimensions: 7.9 x 1.2 x 1.6"
Measuring Units: °F, °C, fpm, m/s, cfm, m3/h, l/s

Packaging and Delivery
Packaging Details: Cardboard box
Selling Units: Single item
Single package size: 28X16X11 cm
Single gross weight: 1.500 kg