4000W Pure Sine Inverter/Charger - 24VEVOLUTION(TM) Series Inverter/ChargerPure sine wave inverter, adaptive battery charger, transfer relay - All in ONE unit. Samlex Evolution(TM) Series inverter/chargers provide reliable AC power wherever it&';s needed. For use with boats, RVs, cabins and specialty vehicles, as well as alternative energy, back-up and emergency power applicationsUsing state-of-the-art technology, the Samlex EVO(TM) inverter/charger operates at 165 million instructions per second with lightening fast load & response times, has 9 points of physical protection monitoring (being scanned up to 10,000 times per second) to detect fault conditions & protect itself in a vast range of adverse environmentsThe EVO-4024 is a 4000 Watt Pure Sine inverter, 24 VDC input, 120 VAC output, 50/60 Hz. It intelligently integrates a 110 Amp 4 stage Battery Charger and a 70 Amp Transfer Relay into an advanced and affordable off-grid power solutionAC Inputs Two separate AC inputs - one for grid (priority #1), one for generator (priority #2), connect simultaneously, no need to reconfigure when different power sources are available Generator Input is specifically designed to have more tolerance for wave form distortion, prevents unnecessary "rejection of AC input and switch to inverter" by tolerating distorted wave forms that can be produced by gritty generators Each AC input is programmable for voltage and frequency. User determines what the min and max thresholds are to switch from Grid or Generator to Inverter Generator start can be initiated by "Status Relay" contact, can be programmed to activate when grid is lost Solar Input Connect a solar charge controller directly to the EVO(TM) though the Battery Charger external DC Input, seamlessly integrates solar charging into the EVO&';s power system ONLINE Mode can be used to prioritize Batteries/Inverter over the grid, ideal for those wishing to operate primarily on solar power (when the grid is available, but might be costly) Battery Charger 3 or 4 stage charging with Equalization (must be manually initiated) Adaptive algorithm is used during Bulk to assess the condition of the battery. Subsequent stages are then based on the condition of the battery rather than pre-set time periods for Absorption and Float. Prevents unnecessary charging, extends the life of batteries Programmable - set battery voltage thresholds to initiate charging Transfer Switch Zero transfer time when switching from Inverter to Grid. When grid comes on, the inverter synchronizes with the wave form and then transfers instantly at zero crossing