Kit includes DC710 Unit, USB Charger, A770 Combustion Flue Probe w/Temperature & Carry Case. Operate remotely via Bluetooth using your Smartphone or tablet and the free TPI app. No need for long probe hoses – you can be at the control center with your smartphone, while the DC710 does the work at the stack. The free TPI app provides on-site reports which can instantly be emailed and stored without the need for paper or printers. 24-Hour real-time clock for accurate documentation. Powerful magnetic and/or hook mounting. Durable, rugged and sealed housing.