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🌟 Stay ahead of the climate curve with Extech RH300 — precision you can trust, wherever you go!
The Extech RH300 Digital Psychrometer is a compact, field-ready meter that simultaneously measures relative humidity (10-90% RH), air temperature (-4°F to 122°F), dew point, and wet bulb temperature. Featuring a unique twist-to-close sensor cap for protection, it supports advanced temperature differential calculations with an optional probe. Designed for professionals needing accurate, real-time environmental data, it offers user-friendly functions like Data Hold, MAX/MIN/Average readings, and Auto Power Off, all backed by ±1°F accuracy.
| ASIN | B000BF5400 |
| Battery Description | 2 x AAA (1.5V) |
| Best Sellers Rank | #575,786 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #62 in Humidifier Humidity Meters |
| Brand Name | Extech |
| Color | Orange |
| Customer Reviews | 4.4 4.4 out of 5 stars (62) |
| Global Trade Identification Number | 00793950443002 |
| Included Components | Digital Psychrometer |
| Item Weight | 0.02 Kilograms |
| Manufacturer | Extech |
| Mounting Type | Tabletop |
| Operating Humidity | 10% to 90% |
| Temperature Accuracy | 1 |
| UPC | 793950443002 796841974500 |
| Unit Count | 1.0 Count |
| Upper Temperature Range | 120 Degrees Fahrenheit |
| Voltage | 1.5 Volts (DC) |
| Warranty Description | 1 Year |
A**R
Good value.
It came in handy for a project we were working on. It’s surprisingly accurate, durable, and easy to read. Definitely worth the purchase.
G**N
good item have used these types off and on for years
This has always been my go to when i need dew point reading
T**0
Cheap Meter works OK
This hand held device works OK, it will tell you RH and Dew point very well but the temperature is always 8 to 10 degrees lower than actural room temps. If you really need true reading, don't purchase this one spend more cake and buy a better unit.
J**O
Good Psychrometer
This psychrometer is portable and easy to use. Their measurements are quite accurate, but take time to stabilize. The thermocouple connector is quite useful. This meter has multiple functions such as humidity, temperature, temperature difference and dewpoint.
P**A
RH300
Works great. I lost my Extech pocket model so this is a replacement for it. I like the feature for closing off the ports on the sensor tip. I tend to have the instrument in my truck or in a briefcase so this feature is welcomed. The larger display is much easier to read for me.
C**.
Quick and easy to read display
Was able to get a quick and accurate rh and temp reading for my mold inspections.
D**N
Value for the dollar
These are excellent hand held meters without the expense of bigger units.
H**N
view window easily scratches. RH/DP way off
Only used product twice in crawlspace. Casing is weak, view window easily scratches. RH/DP way off. Should come calibrated. Should include calibration canisters for calibration, instead there's an addition charge for that item. I will be returning this product. I could see it may be useful to some industries, but not for contscko
E**S
Kan alleer maar gekalibreerd worden mits kit RH 305 te gebruiken of zelf gemaakt equivalent RH 33% en RH57% ijkstandaarden. De fabrieksijking is corect. Goed toestel voor weinig geld. Goede technische ondersteuning vanuit VS.
T**E
These are the humidity meters that we use for work. We don't use the measured dew point, instead we do our own calculations to determine it (I find that the measured dew point is off). This meter is very easy to use. Just make sure that you aren't holding the meter too close to your face (otherwise your breath will skew the results).
B**N
Seems kinda cheap but works ok.
Trustpilot
1 month ago
2 months ago