The Hughes Autoformers 50-Amp Bluetooth Surge Protector is the world's first "Smart" RV surge protector. This Power Watchdog Smart Surge Protector offers 4800 joules of the best possible surge protection for your coach and also has Bluetooth connectivity so you can monitor live park power conditions on your smartphone using a free mobile app.• 50 Amp Service• 4800 Joules of Advanced Surge Protection• Wirelessly Monitor Volts, Amps, and Watts on your Smartphone in Real Time• Complete LED Park Power Diagnostics with Wireless Fault Alerts• Set Custom Alert Thresholds• Replaceable Surge / Spike Module• Heavy-Duty Construction• IP65 Rating• Rugged Outdoor Rain-Proof Design• Premium Protection from Spikes and Surges• Free Mobile App for iOS and Android platforms• Approximately 33" long including cables• Unit Dimensions: 8.5" x 3.75" x 2.75" Complete LED park power diagnostics with wireless fault alerts Replaceable surge or spike module should you get hit by a large spike Rugged outdoor rain-proof design with IP65 rating | Hughes Autoformers Power Watchdog 50-Amp Bluetooth Surge Protector in Black