Add extra loud ringing to any analog phone. Loud Ringer mains powered, industrial sounding alarm to suit two wire analogue telephones. Loud sounding alarm internal speaker produces 105 Decibel output maximum.

External interface for telephone works on telephone working voltage with potential free contact to connect sirens, bells, hooters, any audio visual device.

• Optional SIREN/HORN SPEAKER/GONG BELL attachment
• Internal LED visual alert
• Available in all voltages
• Wall mountable using standard telephone plate
• DIY wall mountable template supplied
• Visual ring indication
• Adjustable volume control (Optional)