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Description
Reed Instruments Indoor Air Quality Meter R9905This data logging Indoor Air Quality (IAQ) Meter has the ability to record samples on internal memory and keep track of registered readings with a time and date stamp. The R9905 features a Nondispersive Infrared (NDIR) CO2 sensor for stable, accurate readings and the option to track live measurements via software. Features Triple LCD display simultaneously monitors carbon dioxide (CO2), temperature and relative humidity Calculates time weighted
This data logging Indoor Air Quality (IAQ) Meter has the ability to record samples on internal memory and keep track of registered readings with a time and date stamp. The R9905 features a Nondispersive Infrared (NDIR) CO2 sensor for stable, accurate readings and the option to track live measurements via software.
Features
- Triple LCD display simultaneously monitors carbon dioxide (CO2), temperature and relative humidity
- Calculates time-weighted average (TWA) and short-term exposure limit (STEL)
- Low-drift NDIR CO2 sensor for stable and accurate readings
- Temperature and relative humidity measurements help determine thermal comfort
- Easy-to-read backlit LCD display
- User adjustable audible alarm
- Data hold, Max/Min and Average functions
- Record up to 32,000 datapoints and keep track with internal time and date stamp
- User selectable sampling rate from 1 to 60 mins
- Low battery indicator and auto shut-off
Specifications
| Temperature | |
| Measuring Range | -4 to 140°F (-20 to 60°C) |
| Accuracy | ±1.5°F (±0.8°C) |
| Resolution | 0.1°F/°C |
| Humidity | |
| Measuring Range | 0 to 100% RH |
| Accuracy | 10 to 90% RH: ±3% |
| <10% & >90% RH: ±5% | |
| Resolution | 0.1% RH |
| CO2 (Carbon Dioxide) | |
| Sensor Type | Nondispersive Infrared (NDIR) |
| Measuring Range | 0 to 30,000ppm |
| Accuracy |
0 to 5000ppm: ±(75ppm +3% rdg.) 5001 to 30,000ppm: ±(150ppm +5% rdg.) |
| Resolution | 1ppm |
| Warm-up Time | 20s |
| Sampling Rate | 2s |
| General Specifications | |
| Display | LCD |
| Backlit Display | Yes |
| Data Hold | Yes |
| Min, Max, Avg Functions | Yes |
| CO2 Short Term Exposure Limit (STEL) | Yes (15 mins) |
| CO2 Time Weighted Average (TWA) | Yes (8 hours) |
| Datalogging Capabilities | Yes |
| Real-Time Clock and Date Stamp | Yes |
| Selectable Sampling Rate | Yes (between 1s and 60m59s) |
| Internal Memory | Yes (32,000 datapoints) |
| Alarm | Yes (Low and High) |
| Auto Shut-off | Yes (adjustable) |
| Kick Stand | Yes |
| Low Battery Indicator | Yes |
| Power Supply | 9V battery |
| Battery Life | Approx. 10 hours (continuous use) |
| PC Connectivity | USB |
| Software OS Compatibility | Windows 7 / 8 / 10 |
| Product Certifications | CE |
| Operating Temperature | 32 to 122°F (0 to 50°C) |
| Storage Temperature | -4 to 140°F (-20 to 60°C) |
| Operating Humidity Range | 0 to 90% |
| Storage Humidity Range | 10 to 75% |
| Maximum Operating Altitude | 6561' (2000m) |
| Dimensions | 11.2 x 2.6 x 1.5" (284 x 65 x 39mm) |
| Weight | 10.7oz (304g) |
Included Items
- Indoor Air Quality Meter
- USB Cable
- Hard Carrying Case
- Batteries
Applications
- Environmental monitoring in buildings, schools, hospitals and factories
- Verify HVAC/R system installation and system performance
- Manufacturing processes where high CO2 concentrations must be measured, such as fire extinguishers, wine, soda and sugar industries
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Fantastic writing and non-stop action
Format: Kindle
This is a promising, fantastic beginning to what will be a 4-book series. Some readers may be content to read only the first 2 books, but I think you'll find that the story is so good that you'll want to keep reading books 3 and 4.
Book 1 is about omega Elvana's introduction to the "Starling" brothers and their search for another missing person, Kelly. It's a bit of a rocky start, with deception and betrayal a key element. Hardly an auspicious beginning. Each member has their own path and purpose in the pack. Their interactions and the resulting narrative are so well-written that I found it difficult to put down.
There is a cliffhanger that will have you reaching for book 2 as you finish, so make sure you have it on hand.
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Reviewed in the United States on September 27, 2023
★★★★★ 4
Fun read
Format: Kindle
I'm not really into mafia books but I love Roxy Collin's other series so I decided to give it a try. It had the same great romance, spice, swoon-worthy characters and exciting plot that are her signature. Arben was my favorite, although it was a bit sudden how quickly he changed from ignoring her to wanting to be pack. There were almost too many twists/layers of lies to keep track of but I'm looking forward to reading the other books.
The only thing that detracted from the story for me was the need for a bit more proofreading. It was mentioned that Kelly is a female and male at different points, leading me to think she changed her mind at some point about the character's gender but didn't go back and edit it to align in all places. Like another reviewer pointed out, step siblings are different than half siblings. They are incorrectly referred to as step siblings because they (allegedly) share the same biological dad. There are a few other typos as well but those aren't a big deal.
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Reviewed in the United States on March 18, 2025
★★★★★ 5
Stepbrothers, Secrets, and Sizzling Heat
Format: Kindle
Twisted Lies by Roxy Collins is a wild ride through family secrets, amnesia, and a steamy stepbrother romance. When Kelly discovers her life is built on lies, she ends up tangled with three alpha stepbrothers and an assassin who once helped her through a heat.
The tension? Off the charts!
The heat is real, and the complications are messy in the best way. Full of twists, secrets, and fated mates? You'll be hooked from page one!
Love omegaverse drama with a dash of taboo? This one's for you!
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Reviewed in the United States on September 10, 2024
★★★★★ 3
Good read
Format: Kindle
The book has some good twists and turns, but truthfully I was so confused on some things. It didn't have a good flow for me personally. Not sure if it's due to typos or using him/her wrongly, but I thought Kelly was both a guy and a girl. Actually I still don't know, and it made me incredibly frustrated. It would refer to Kelley as him or he, and then again in another part of the story as her she and sister. On to the next book, I hope there is some clarity and a smoother flow. This is a slow burn, and I just don't know how much I care for the Alphas yet. Idk if I recommend.
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Reviewed in the United States on February 8, 2023
★★★★★ 5
the lies
Format: Kindle
This is amazing fast pace read that is full of plot twists and lies that keep getting bad. This is a story we’re a omega has been lied to by her mother and finds out that someone is slowing dieing. 3 alpha take the omega and feed her more lies so they can use her against her father so they can find their mate Kelly. This is a dark read and ends in a cliffhanger and so good.
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Reviewed in the United States on June 13, 2023