Is there a sdk/api - can one programmatically read the output (write my own app)?

I don't know, But I use the Measure Quick app.

Hi there. Is this a second gen?

Mine has the magnet and stick bend also. My Bluetooth range is somewhere around 50 ft or so through normal wood walls. Works great.

will it stay easily in side an air vent?

It comes with a magnetic collar. I find it stays nicely on all types of tin just put the tip through a 1/4" hole in the duct (easily plugged or covered when your done) and let the collar do it's job. I got two so I can do real time we and dry bulb delta T. It also has a magnet in the Handel. However, if you want to place the whole unit in the vent it will not read as well as the probe is ment to be perpendicular to the airflow.

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605i Thermohygrometer - Hygrometer & Indoor Thermometer for Humidity Measurement and Indoor Temperature - 90° Bendable In-Duct Temperature and Humidity Monitor with Bluetooth - iOS & Android

Product ID: 154778250

Details

Battery Description
Alkaline
Brand
Testo
Color
black/orange
Item Weight
95 g
Product Dimensions
1"W x 10"H

📱Bluetooth-enabled live data feed

🔄90° bendable probe for versatile access

⏱️150h battery life for extended use

$297.25

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📊 Bend, Connect, Measure — Master your environment with testo 605i!

READY OUT OF THE BOX - Comes calibrated and powered with 3 AAA batteries for instant, hassle-free use.
DATA DRIVEN DECISIONS - Create, save, and share custom reports directly from your mobile device to stay ahead in HVAC/R diagnostics.
FLEXIBLE ACCESS ANYWHERE - 90° bendable probe head lets you measure hard-to-reach ducts, crawl spaces, and registers with ease.
SEAMLESS SMART INTEGRATION - Effortlessly monitor and log humidity & temperature via iOS/Android app with Bluetooth connectivity.
PRECISION IN EVERY MEASUREMENT - Accurate readings with ±0.5°C temperature accuracy and automatic dew point & wet bulb calculations.

The Testo 605i Thermohygrometer is a compact, Bluetooth-enabled device designed for professional HVAC/R technicians and home users alike. Featuring a 90° bendable probe for versatile in-duct and room measurements, it delivers precise temperature and humidity data with automatic dew point and wet bulb calculations. Controlled via a free iOS/Android app, it offers live data streaming, report generation, and remote monitoring. Supplied calibrated with long-lasting batteries, it’s the smart choice for accurate environmental monitoring.

Specifications

ASIN	B07V717PFD
Battery Description	Alkaline
Best Sellers Rank	#51,244 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #139 in Indoor Thermometers
Brand Name	Testo
Color	black/orange
Customer Reviews	4.7 4.7 out of 5 stars (383)
Global Trade Identification Number	04029547022531
Included Components	industrial-and-scientific-temperature-indicators
Item Dimensions W x H	1"W x 10"H
Item Weight	95 g
Manufacturer	Testo
Model	0560 2605 03
Mounting Type	Tabletop
Number of Items	1
Number of Packs	1
Operating Humidity	10-35%, 35-65%, 65-90%, <10% RH or >90% RH (at 77°F)
Part Number	0560 2605 03
Temperature Accuracy	0.5 °C
Temperature Reading Accuracy	plus_minus_0_point_5_degrees_celsius
Unit Count	1 Count
Upper Temperature Range	140 °F
Voltage	3 volts

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