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Description
MAJ MT9415 in 1 Multifuction Digital Environment Multimeter Environment Meter Overview The MT941 5 in 1 digital Multifunction Environment Meter has been designed to combine the functions of a Sound Level Meter, Light Meter, Humidity Meter, Temperature Meter and CFM CMM Thermo Anemometer. It is an ideal Multifunction Environment Meter with scores of practical applications for professional and home use. The Sound level function can be used to measure noise in
5-in-1 Multifuction Digital Environment Multimeter
Environment Meter
Overview
The MT941 5-in-1 digital Multifunction Environment Meter has been designed to combine the functions of a Sound Level Meter, Light Meter, Humidity Meter, Temperature Meter and CFM/CMM Thermo-Anemometer. It is an ideal Multifunction Environment Meter with scores of practical applications for professional and home use. The Sound level function can be used to measure noise in factories, schools, offices, homes, checking acoustics of studios, auditoriums and hi-fi installations, etc . The Light function is used to measure luminance in the field. It is fully cosine corrected for the angular incidence of light. The light sensitive component used in the meter is a very stable, long life, silicon diode. The Humidity/Temperature uses a humidity/semiconductor sensor and K-type thermocouple. CFM/CMM Thermo-Anemometer is suitable for use in a wide variety of applications, including plant maintenance operations, environmental analysis, fume hood testing, and HVAC system assessments.
Features
- Large LCD display with backlight
- MAX, MIN and AVG measurements
- Display shows Sound, Light, K-Type Temperature, Humidity & Temperature as well as Air Velocity & Air Flow
- Electronic Offset function allows compensation of thermocouple errors to maximize overall accuracy
- The device measures air velocity, it features 5 selectable units of velocity measure: m/s, ft/min, km/h, MPH, knots, and it features 2 selectable units of flow measure: CFM, CMM
- Easy to set Area dimension (up to 6 points) for air flow measurement
- USB interface, USB to UART Bridge Controller
- Low battery indication, Auto Power Off (Sleep mode) adjustable
- Data Logging
Specifications
| Function | Range | Resolution | Accuracy |
| Temperature K-type | -200°C – 1375°C | 0.1°C | ±(1.5°C + 2 Digits) |
| Air Temperature | -30°C – 99.9°C | 0.1°C | ±(1°C + 2 Digits) |
| Relative humidity | 5- 98%RH | 0.1RH | ±(3.5% RH) |
| Sound level range | 30dB – 130dB | 0.1dB | ±(3.5dB at 94dB, 1kHz sine wave) |
| Lux level range | 20 – 20000Lux | 0.1Lux | ±(5 + 10 Digits) |
| Air velocity m/s | 0.40 – 30m/s | 0.01m/s | ±(3% + 0.20m/s) |
| Air velocity km/h | 3.6 – 108.0 km/h | 0.1km/h | ±(3% + 0.8km/hr) |
| Air velocity ft/min | 196 – 5900 ft/min | 1ft/min | ±(3% + 40ft/min) |
| Air velocity mph | 2.2 – 67.00 mph | 0.1 mph | ±(3% + 0.4mph) |
| Air velocity knots | 1.9 – 58.0 knots | 0.1 knots | ±(3% + 0.4knots) |
| Air flow Cubic m/min | 0 – 999900CMM | 0.001 – 100 | Accuracy is a function of velocity and area |
| Air flow Cubic ft/min | 0 – 999900CFM | 0.001 – 100 | Accuracy is a function of velocity and area |
| Digital Display | Large LCD Display | ||
| PC Interface | USB, USB to UART Bridge Controller | ||
| Min Max | Yes | ||
| Data Hold | Yes | ||
| Back Light | Yes | ||
| Enclosure | Over Moulded Casing | ||
| Low battery indication | Yes | ||
| Battery | 9V | ||
| Weight | 365g | ||
| Dimensions | 248 x 65 x 45mm | ||
| Safety Specs | IEC61326 | ||
Downloads
Additional Information
| Device | Environment Meter |
| Type | Digital |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 4
Easy Read With a Wild Ending
Format: Audiobook
This was a really easy book to get pulled into. The writing flowed well and I flew through it without feeling bogged down at any point. While I don’t think it hit me as hard as some of Keri Lake’s other books, I was still invested the whole time and needed to know where everything was going.
The atmosphere and mystery kept me hooked, but the ending? That twist completely caught me off guard. I honestly did not see that coming at all. Even though this one wasn’t my favorite from the author, the final turn alone made it worth the read.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
A masterfully written, stunning, gothic romance!
Format: Kindle
Lucian Blackthorne . . . my, my, my. Be still my romantic, sinful, dark heart. This male lead is one of the most addicting, flawed, sensual, erotic characters I've ever read. fanning myself I loved his dark, thrill-seeking, possessive, obsessive, carnal nature. Seriously, where can I find one?
I digress. Lucian is a scarred man with secrets but that's only the tip of the proverbial iceberg. He's layered as deeply as an onion and it's addicting to peel back each one. He's a rich, powerful alpha male but there's so much to the man the town refers to as the Devil of Bonesalt. He's marked by loss, lies, a painful past, and the shadows of his choices in life. The Blackthorne name bears tragedy, turmoil, and an affiliation with the macabre.
Isadora is a strong female lead. She's young but her life hasn't been easy. She's flawed, haunted by the past, and as much an outcast as her new employer, the enigmatic, elusive Lucian Blackthorne. Her new position brings her into the fold, learning the darkness, deceit, sadness, and crimes elicited against the Blackthorne family. It only takes one night, one passionate encounter with the master of salt and bones to change her life forever.
Scandal, intrigue, tortured hero, suspense, thrills, mind-blowing twists, jaw-dropping secrets, and enough sensual bedroom scenes to set your kindle on fire.
This is a MUST READ. One of the best reads of 2022 for me. LOVED it!!
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Reviewed in the United States on October 9, 2022
★★★★★ 3
Solid 3.5 for me.
Format: Kindle
The story in the characters were unique which I liked. Never read a story like it. Kept me interested. It just wasn't as captivating as I hoped.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
🖤🖤4 Stars🖤🖤
Format: Kindle
“There are darknesses in life and there are lights. You are one of the lights...The light of all lights.” - Master of Salt & Bones.
REVIEW: This book follows Isa who lives with her aunt on an island. Isa begins a new job as a caretaker for the dark, and mysterious Blackthorne family. A family who is disliked and even feared by the rest of the inhabitants of the island. However, as she grows closer to the man who they call the devil, Lucian Blackthorne, Isa sees for herself what the truth of Blackthorne manor really is.
This book is a dark romance! Originally I was told it was fantasy, which I don’t agree with at all. It is more of an erotic, gothic feel with some mystery sprinkled in. The plot was very interesting and kept me intrigued. This book was also quite steamy, however, I felt those scenes were well done and didn’t take away from the rest of the book.
Overall, the content in this book is quite dark and the backstories of the characters involve potentially triggering matters. Be aware to look these up if you feel like you need to. Overall, this is the first book I have read by Keri Lake, and I am excited to read more.
SYNOPSIS: When I was a little girl, I dreamed a handsome knight would come and rescue me from my wretched mother. He'd ride up on his white steed and break the curse I've been fated to carry since the day I was born.
Funny how things changed over time. How the fairy tale twisted into something far more crooked, darker than I ever imagined.
In reality, my knight is scarred and broken, living alone in a castle of bones that overlooks the sea. He isn’t searching for me. He never was.
Lucian Blackthorne is as cursed as I am, and equally shunned by the locals, the fishers of men, who believe him to be the devil in the flesh. Perhaps he is, with the way his amber eyes draw me in, ignite me like an infernal blaze. And the sins he whispers in my ear are as wickedly intoxicating as the man himself.
Yet, his touch is heaven and his will is my weakness. He calls us forbidden, an unsalvageable tragedy, with no happy end. Maybe we are. But in this story, he’s the one who needs saving.
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Reviewed in the United States on August 11, 2020
★★★★★ 5
one of my top reads of 2023 🖤
Format: Paperback, Format: Paperback
Master of Salt & Bones by Keri Lake review (no spoilers)
♾️/5 ⭐️
4/5🌶️
🏰gothic dark romance
🎹murder/mysteries
🏰age gap
🎹spicy
🏰touch her & d!e
🎹secret society
🏰dual POV & a past timeline for Lucian
“we’re the composers, the conductor’s of our own fate, and we write the notes to a beautiful, dark melody that no one else can hear.”
this book was AMAZING ❤️🔥
i couldn’t put this book down for anything .
this book gives beauty & the beast / phantom of the opera vibes with a lot more going on . Lucian hires Isadora to help take care of his mom, not his nurse but a companion for her . Isadora has a painful past & she’s willing to do anything to get out of town to make some money , even if that means working for a guy with a thousand bad rumors about him . the way Lucian talks to Isadora is like he’s speaking poetry without even trying . the wording & quotes in this book were chiefs kiss . the spice in this book was gold 🔥 the plot of this book is super original & sooooo twisty . i think there were 5 different twists at the end & i had my jaw on the floor at all of them .
literally obsessed with this book . the writing was beautifully done 🫶🏼
this is my first book by Keri & i will now be ordering more from her immediately🖤
this book is definitely in my top reads of the year!
as always check your TW 🤍
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Reviewed in the United States on September 29, 2023
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