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Toyrebel2
> 24 hourGreat tool to add to your toolbox if your a HVAC tech.
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Kreed
> 24 hourFantastic probes with clear readings on the app. Grabbed two and my TD was always spot on. Discovered low charges more accurately than a thermometer.
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drew herban
> 24 hourConnected to my guage set quickly to assist in diagnostic work!
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Pablo Alvarez
> 24 hourWorks perfect with my testo 550i connectivity is spot on with Bluetooth
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Jason Childress
> 24 hourDoes not integrate with the new Testo Bluetooth gauges. Has to used a stand-alone app on your phone. Poor range as well.
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William Cates
> 24 hourGreat item, I have others by Testo
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J Scott
> 24 hourHelps when tracking temperature and humidity in many applications. I use it to check the temperature inside WI coolers during unit startup. This probe along with the pressure and temperature sensors allow for TEV adjustment and monitoring out side the cooler in most cases. You can also use it to determine the correct charging of AC systems using piston type metering devices to determine wet bulb temperature of the space. I’ve just loaded the new testo App but the older one worked well for me.
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NJ tradesman
> 24 hourProbe works great, but issue is using with app and smartphone, manifold. Used alone with app, shows temp and hum. well. If manifold pressure is used, it reverts to temperature only readout. . Reason why 1 star taken off. Also no instructions on tip , to twist open ! I almost tried pulling the tips off until my eye caught the groove part.
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Bobby
> 24 hourIf you have an older phone or a phone that hasnt been updated to the newest android or ios then this tool will work great. However, if you have a newer phone, particularly a samsung, then check the reviews on the play store. The app is nearly unusable on newer phones. Several features dont work properly and it is extremely buggy.
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Ruslan
> 24 hourI really liked the hygrometer. Came with calibration protocol. I recommend