KD9561/CK9561 Four-Tone Alarm Sound Module

KD9561/CK9561 four-tone alarm sound module is a highly versatile and compact CMOS integrated circuit designed to generate four distinct emergency siren sounds for security and toy applications. This pre-programmed module simplifies the creation of audio alerts by eliminating the need for complex external oscillation circuitry. Furthermore, users can easily select between police, fire, ambulance, and machine gun sounds through simple pin-jumping configurations. Consequently, this module has become a staple in the DIY electronics community for its ease of use and loud output. Therefore, you can efficiently integrate this sound generator into any project requiring an immediate and recognizable audible warning system.

Key Features:

• Four-in-One Functionality: The module generates police siren, fire engine, ambulance, and machine gun sounds depending on the configuration of the selection pins.
• Low Power Consumption: This CMOS-based design operates with minimal current draw, making it perfect for battery-powered handheld devices.
• Simple Selection Logic: Users switch between sound modes by connecting specific pins to either the supply voltage or ground.
• Wide Voltage Range: The IC functions reliably across a flexible DC voltage spectrum, ensuring compatibility with most common power sources.
• Minimal External Components: You only need a few passive components and a transistor to drive an external speaker.

Technical Specifications:

• Operating Voltage (V_CC): 1.8 V to 3.5 V DC (Typically 3.0 V)
• Quiescent Current (I_Q): ≤ 2 µA
• Operating Current (I_OP): ≈ 150 µA (without speaker load)
• Oscillation Method: Internal RC oscillator
• Output Type: Audio signal (requires external NPN transistor like S8050 for speaker driving)
• Operating Temperature: −10°C to +60°C

Mechanical Specifications:

• PCB Material: Standard FR-4 or single-sided phenolic board
• Form Factor: Compact PCB module or COB (Chip-On-Board) package
• Mounting: Through-hole soldering or header-compatible pitch
• Reliability: Robust solid-state construction with no moving parts.

Dimensions:

• Length: ≈ 20.0 mm
• Width: ≈ 13.0 mm
• Thickness: ≈ 1.2 mm (PCB only)
• Pin Pitch: ≈ 2.54 mm

Pinout and Wiring:

• Pin 1 (VCC): Connect to the positive power supply (+3 V).
• Pin 2 (GND): Connect to the circuit ground (0 V).
• Pin 3 (OUT): Connect to the base of an NPN transistor (e.g., S8050) to drive the speaker.
• Selection Pins (SEL1/SEL2): Change these connections to select the sound; however, refer to the wiring guide for specific sound mapping.
• Wiring Note: Ensure you place a current-limiting resistor if your supply voltage exceeds 3.5 V to protect the internal logic.

Datasheet Reference:

• Download KD9561/CK9561 Alarm Sound Module Datasheet

Commonly Used in:

• Security Equipment: Providing audible alerts for home intrusion systems or window sensors.
• Educational Kits: Serving as a fundamental project component for students learning about IC logic and audio amplification.
• Model Vehicles: Adding realistic siren effects to toy cars, ambulances, and fire trucks.

Applications:

• Emergency Sirens: Implementing low-cost alarm sounds for small-scale emergency signal devices.
• Electronic Toys: Integrating sound effects into battery-operated ray guns or play vehicles.
• Industrial Alerts: Providing distinctive audio cues for machine status or error conditions.

Equivalent Models:

• UM66T Series: A similar melody generator IC, although it typically focuses on musical tunes rather than alarm sirens.
• KD9300: A sound-on-chip module often used as a direct alternative for siren generation.
• CK9562: An updated version of the same series offering similar multi-tone capabilities.

Package Includes:

• 1 x KD9561/CK9561 four-tone alarm sound module