ptlevel wireless tank level monitor : monitor the level your cistern, well, sump, chemical tanks and more. access for free any where, any time online. ptlevel the new ptlevel wireless tank gauge provides tank level monitoring via internet so you can monitor your level from your phone, computer, tablet or tv! be alerted at any set point by sms or email and share with your water delivery company. the setup involves connecting the device to your home wifi using only the device itself or through an android or ios app. our customer support team is available by phone or through a ticket system online to help you through this process if needed. a ptdevices account is free and includes all the needed features for your device. view your usage history over time to see how you've been saving on water, or see when your delivery company delivered. perfect for wells, cisterns, sumps, oil tanks, chlorine, hydrogen peroxide, def, fertilizer and so much more (not intended for use in gasoline or other volatile fluids). no monthly fees!