Extech RH390 Precision Twin Show Hygro Thermometer Psychrometer
$283.66
Value: $283.66
(as of Nov 24, 2024 21:01:50 UTC – Particulars)
Precision Twin Show Hygro Thermometer Psychrometer
Measures relative humidity from 0 to 100% and temperature from -4 to 140° F (-20 to 60° C)
Accuracy ±2% from 20% to 90%; ±1.8°F (±1°C)
Twin show of humidity and temperature or humidity and dew level or humidity and moist bulb
Capacitance sensor responds underneath to humidity adjustments in underneath 30 seconds
Slim design with rubberized ides for higher grip
Clients say
Clients just like the accuracy of the humidity meter. They point out it is simple to make use of and useful for calibration. Nonetheless, some clients have reported that the product is cheaply made and fails inside months.
AI-generated from the textual content of buyer evaluations
KH –
Amazing
This unit is easy to use and precise
Gavin Brink –
humidity reading
This product was exactly what I needed. We offer habitat consultations for a veterinary business, and I need something that can give me a constant update on humidity & ambient air temperature to go with the other readings I am taking in an animals environment. It comes in a protective case that also seems like it will hold up well to our “on-the-move” jobs. I plan to use this device when I go into the field to look at temperature & humidity levels when documenting animal behavior. I understand this is not the most common use for the product, but I wanted to share that it works for a specialized need.
Amazon Customer –
Extech RH390
Very quick readings and easy to use.
Amazon Customer –
Purchased multiple – fails quickly
Purchased several of these. One did not work out of box. Others have failed within months.
pablo –
It’s ok.
It does the job. Temperature needs to be calibrated after just a few months 🙁
Wayne D –
Works as it should but…..
I’m using it for calibration of indoor thermostats. Assuming it is accurate, it works as it is supposed to. The meter and most thermostats vary from 2 – 4 degrees and from 4 – 6 percentage points on RH so it is helpful for calibration. The reason for 3 star rating is because all 4 screws connecting the front and back cover were missing. That quality control issue makes me question the rest of the device. I discovered this by accident. I was unscrewing the battery cover and had not quite got the screw out all of the way. I pulled on the battery cover and the rear cover came off. I wrapped some tape around it but disappointing for ~$200 device.
Thanks to those who mentioned the dust cap issue. I removed it very carefully and had no problem.
Stephen Schiller –
Indeed a pro instrument
Indeed a pro instrument. It does take slightly longer to read that the cheaper version. But that is a cost of higher precision so it’s ok.
Fernando –
works great
Works great, brand new just like seller described.
Juan –
Me gusto que cumple con lo que uno espera recibir.
Dant –
Appareil précis et facile à utiliser, lecture directe d’humidité relative et température. Portable peut être utilisé partout pour tout genre de vérification.
Il faut cependant prendre quelques minutes pour que l’appareil se stabilise pour un résultat plus précis.
Très bon rapport qualité-prix, je le recommande.
Jose –
Great and delivered as promised
Chris Howieson –
Worked consistently for 3 months then stopped all together, now doesn’t turn on. Checked return and support coverage and that ended at 3 months to the date.
Not worth the price, buy local