PR Express Accessory Panel 200W 24VDC Inverter w/ Relay 230137 – PRE Accessory Panel 200WAC 24VDC inverter w/Relay The inverter control panel features a Cotek SE 200-124 DC:AC inverter that hooks directly to the user’s battery bank. The inverter outputs 200 watts of pure sine wave AC power at 50 or 60 Hz. Inverters can have high surges of power that the load controller can’t handle. The PRE Accessory Panel 230130 features a relay to address this issue and to protect the controller, while still allowing for Low Voltage Disconnect.