DTMF Audio Generator Module 5-24V DC with Dual 3.5mm Audio Plugs

The AE11A04 DTMF Module is a compact audio generator board designed to work with a dial keypad and MCU interface. It enables the production of 16 dual-tone multi-frequency signals through its audio 1 and audio 2 outputs, making it a practical choice for projects that require tone generation or remote control via telephone-style keypads. Wide Voltage Compatibility The module accepts a DC supply between 5 and 24 volts, giving you flexibility when integrating it into existing circuits with different power rails. This broad operating range simplifies wiring and reduces the need for additional voltage conversion. Dual Audio Outputs Two 3.5mm audio plugs are included on the board, allowing simultaneous connection to external audio equipment or downstream circuitry. This dual-output arrangement is useful when you need to feed the same tone signal to more than one destination without extra splitting hardware. MCU and Keypad Integration Designed for straightforward interfacing, the module can be driven by a microcontroller or a standard dial keypad. This makes it suitable for embedded projects, test setups, and other applications where reliable DTMF tone generation is required.