EVO-4248SP 4200W 120/240 VAC Split Phase Inverter/Charger with 60 AMPSplit phase pure sine wave inverter, adaptive battery charger, and transfer relay - ALL in ONE device. Samlex EVOLUTION(TM) Series Inverter/Chargers provide reliable AC power wherever it&';s needed.This 4200 watt, 120V /240V split phase inverter/charger connects to a standard electrical household panel. When you combine it with a 48V battery bank and a solar system you can run a fully equipped off-grid cabin, a remote mobile construction site, or use it as an emergency backup system.Intelligently integrates a 60 Amp, 4-stage Battery Charger and a 40 Amp Transfer Relay into an advanced and affordable off-grid power solution. For use with Lead Acid or Lithium-ion batteries.Optional EVO-RC-PLUS remote control for ease of programming and monitoring.Features:120 / 240 VAC Split Phase (Dual Phase)The split-phase inverter connects to the standard household panel to provide both 120 and 240 VAC output powerAC Input One AC input for grid or for generator, no need to reconfigure when the different power source is available. AC input is programmable for voltage and frequency. The 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 and can be programmed to activate when the grid is lost. Solar Input Connect a 48V MPPT solar charge controller directly to the EVOTM through the 100 Amp Battery Charger external DC Input, seamlessly integrating 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 costly). Battery Charger 3 or 4 stages charging with Equalization (must be manually initiated). An adaptive algorithm is used during Bulk to assess the condition of lead-acid batteries. Subsequent stages are then based on the condition of the battery rather than pre-set time periods for Absorption and Float. Prevents unnecessary charging, and extends the life of batteries. Programmable - set battery voltage thresholds to initiate charging. Specific programmable settings for Lithium-ion batteries. Transfer Switch Zero transfer time when switching from Inverter to Grid. When the grid comes on, the inverter synchronizes with the waveform and then transfers instantly at zero crossing.