High-efficiency DC-12V to AC-12V inverter: efficiently converts a DC 12 V input into a usable AC 12 V output to power devices that require an AC source. Square wave signal generator: this module produces a 50 Hz square waveform, suitable for devices designed to operate with this waveform type. Flexible input voltage range: accepts 8 V to 15 V DC, providing versatility in power sources without compromising performance. Safe installation features: anti-reverse connection protection guards against damage from incorrect wiring during setup, enhancing reliability. Applications: - Power 12V AC devices in vehicles or mobile setups, such as radios or small appliances that accept 12 V AC input. - Educational, hobbyist, or testing projects that require a simple 50 Hz square-wave mains simulation. - Portable backup or off-grid experiments where a 12 V battery is available and a 12 V AC output is needed.