This kit includes the V3000 AC voltage logging module & V3001 DC voltage logging module, allowing you to datalog voltage readings and send the information wirelessly to the 3000 FC digital multimeter. The results can be displayed on the multimeter whilst taking other measurements as well. The voltage logger modules will measure up to 1000V, run for over 400 hours on a single set of alkaline batteries and will store up to 65,000 results. With Fluke Connect you can also send the data from the modules to Android or iPhone with the free app. Data is stored securely in your cloud account and can be shared among your team members in real time. Using this system is a safe way to monitor and log voltage on a live system, whilst keeping the user at a safe distance. The wireless signal is good for up to 20 metres and it can transmit through panel doors. In addition the wireless signal transmits on a unique frequency, which means it won't be affected by machinery, microwaves or equipment such as mobile phones. An optional extra is the PC3000 PC adaptor, with this attached you can view up to 10 modules in realtime and also program the datalogging function of the modules, setting the logging interval from as low as 1 second, up to 1 hour. The PC software will also allow you to download the logged data and export the information to Excel. See it in action Download the App for Free All trademarks are the property of their respective owners. Smart phone, wireless service and data plan not included with purchase. First 5 GB of storage is free. Compatible with iPhone 4x and up running iOS 7 or higher, iPad (in an iPhone frame on iPad) and Galaxy S4, Nexus 5, HTC One running Android 4.4.x or higher. Apple and the Apple logo are trademarks of Apple Inc. registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play is a trademark of Google Inc.