Fast shipping, well packaged. The battery V_in+ and Load V_out+ are shared. The ground is shared with battery V_in-, see photo. I only tried the high input port, which works fine. I use the device to power three large car horns with a low power handlebar switch on my ebike. Works like a charm. I put a heat sink on the mosfets for some cooling and peace of mind... I need to always be able to blow those stupid and blind car and truck drivers of the road with my air horns!
I received my order, it was received in Ukraine almost 3 weeks after payment. The quality is high! The seller is very sociable, conducts dialogue. High-Power 600W tube MOS FET trigger drive module PWM Control High / low level trigger switching DC 4V-60V 5V, 12V, 24V DC. Received, but not connected yet, the quality is at a very good level. Very nice. I am very pleased with this order and wish the seller wealth and prosperity.