Samlex America SA-1500 - Manual (Page 10)

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3-2. Rear Panel Operations
3-2-1. Ventilation Openings
Do not obstruct, allow at least 3 inch for air flow.
3-2-2. DC Terminals
Connect to 12V / 24 V battery or the other power sources.
【+】is positive, 【-】is negative. Reverse polarity connection will
blow internal fuse and may damage inverter permanently.
Model voltage Min voltage Max. voltage
SA-1500-112 10.0 VDC 16.0 VDC
SA-1500-124 20.0 VDC 32.0 VDC
WARNING!
Do not connect the 12V model to a 24 battery,
The unit will be destroyed immediately.