The adventurer 30A PWM charge controller is specifically designed for RV applications as it allows for aesthetically clean flush mounting on walls and is negative-grounded for battery compatibility. It also features an LCD screen for displaying system operation information and allows for full control of parameter settings. The controller comes equipped with a fully comprehensive self-diagnostic system and electronic protection functions to prevent damage from installation mistakes or system faults. Newly added BT-1 Bluetooth Module enables user to pair the charge controller with our smartphone app Renogy BT. The APP allows you to view system performance in real time and make parameter changes right from your smartphone.