Extech 407780A Integrating Sound Level Datalogger
Features
- Precise linearity over wide range (100dB)
- Data logging function can record up to 32,000 records
- Programmable integrating time
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
- 4-digit multifunction LCD with analog bargraph
- Precise linearity over wide range (100dB)
- Display modes: SPL, SPL MIN/MAX, SEL, and Leq
- Programmable integrating time
- A and C Frequency weighting
- Impulse/Fast/Slow response settings
- Datalogging function records up to 32,000 records
- Real time calendar/clock
- Analog and alarm output features can be used to connect with Frequency analyzers, chart recorders, external dataloggers, and sound level alarms
- Built-in USB interface with included Windows® datalogging software
- Tripod mount
- Meets IEC 61672-1, 60651/60804 Type 2 and ANSI S1.4 Type 2 specifi cations
- Complete with windscreen, adjustment screwdriver, USB cable, Windows® compatible software, battery, and case
- (1) Sound level meter
- (1) USB cable
- (1) Windows compatible software
- (1) Windscreen
- (4) AA batteries
- (1) Carrying case
In The News
Lake Malawi: A Treasure to Protect
Lake Malawi (also known as Lake Nyasa and Lake Niassa) doubles as a Rift Valley Lake and one of the seven African Great Lakes. Due to its unique biodiversity, it’s a great place to conduct limnological studies. Harvey Bootsma is a professor for the School of Freshwater Sciences at the University of Wisconsin-Milwaukee and has had an interest in limnology ever since he was a kid. Bootsma fondly recalls summer vacations to Georgian Bay, Ontario, “I probably spent as much time in the water as I did out of it.” He continues,”I remember telling myself ‘I’m going to get a job where I can stay here all the time.’” While Harvey didn’t end up working on Georgian Bay, he was offered a job working on Lake Malawi. He continued working there while completing his Ph.D.
Read MoreMicrobes and Human Health: Aquatic Microbial Communities May Hold Clues about How Deadly Pathogens Spread
Aquatic ecosystems are incredibly complex, with many different biotic and abiotic factors constantly interacting. Microbial communities are a key part of aquatic ecosystems, involved in the constant flow of energy and recycling of organic matter, according to Science Direct . The true scope of microbial community impacts on aquatic ecosystems is still not entirely understood. Eric Benbow, a professor of community ecology at Michigan State University, is exploring how microbial communities and pathogens may be negatively impacting human health, and how a changing climate could worsen this problem. 
 How Do Pathogens Arise? 
 Benbow, along with his students and colleagues, are studying a realm of community ecology that is still relatively unknown.
Read MoreWinter 2023 Environmental Monitor Available Now
In this issue, we showcase researchers from across the globe and the importance of monitoring and protecting biodiversity in a variety of ecosystems. From endangered freshwater mussels across the U.S. to vegetation in the Amazon Rainforest , this latest edition highlights the importance of species of all sizes. Through monitoring various parameters, researchers spent the year gathering data and constructing management plans to protect these valuable species. 
 
Our writers also sought out science professionals that are dedicated to protecting nature’s most vulnerable through traditional and more contemporary methods.
Read More