• Model: FA325 (FK325 Code 325)
• Product Name: Telephone Ring Signal Light 5 LED Assembled Kit
• Product Type: Pre-Assembled Electronic Circuit Board
• Indicator: 5 High-Brightness Light Emitting Diodes (LEDs)
• Power Source: Telephone Line Powered (No External Power Supply or Battery Required)
• PCB Dimensions: 1.40 x 2.25 inches
• Ports / Connectivity: RJ11 Modular Telephone Jacks (TEL IN / TEL OUT)
• Compliance Standard: RoHS Compliant
• Suitable Applications: Quiet environments (libraries), high-noise locations (factories), or home/office use
• Country of Origin: Thailand

The FA325 Telephone Ring Light is a fully pre-assembled electronic signal indicator board designed to provide a highly visible alert whenever an incoming landline call is received. Utilizing 5 ultra-bright LEDs, this module flashes in sync with the telephone ring signal, making it an ideal visual notification solution for high-noise areas such as manufacturing plants or quiet environments like libraries and offices where loud ringers must be minimized.

Powered directly through the standard telephone line interface, the FA325 Telephone Ring Light requires no external power adapter or batteries for operation. This plug-and-play electronic circuit connects effortlessly between your telephone wall jack and telephone set via standard RJ11 connectors, delivering reliable visual signaling without complex wiring.

- Bright Visual Alert: Features 5 high-intensity LEDs that flash instantly during incoming calls to ensure phone signals are never missed.
- Line-Powered Convenience: Operates directly using telephone line voltage, eliminating extra power supplies or battery replacements.
- Pre-Assembled Design: Comes fully soldered and quality tested (QC Pass) for immediate installation right out of the box.
- Seamless Pass-Through Connection: Equipped with TEL IN and TEL OUT jacks for quick connection between wall outlets and landline devices.
- FA325 Telephone Ring Light Reliability: Built with durable electronic components adhering to RoHS environmental standards.

• Printed Circuit Board (PCB): High-grade glass-epoxy (FR4) board engineered with compact dimensions for stable signal processing.
• Light Emitting Diodes (LEDs): 5 high-brightness indicator LEDs arranged for optimal visual signal clarity upon sensing ringer voltage.
• RJ11 Modular Jacks: Dual telephone line female connectors designed to allow easy inline pass-through setup.
• Passive Circuit Components: Premium resistors, signal diodes, and film capacitors engineered to detect ringer signals safely without interfering with call audio.

1. Disconnect the existing telephone cable coming from your telephone wall socket.
2. Connect the line from the telephone wall jack into the TEL IN port on the circuit board.
3. Connect a standard RJ11 telephone patch cord from the TEL OUT port on the circuit board to your telephone device.
4. Place the board in a visible location and call the landline to confirm the 5 LEDs flash during incoming rings.

Printed Circuit Board (FR4 Glass-Epoxy PCB), 5x High-Brightness LEDs, 2x RJ11 Modular Jacks, Signal Diodes, Film Capacitors, Metal Film Resistors, Lead-Free Solder.