This telephone extension ringer can be used to increase the volume of your existing landline phone or to relocate the ringer into a different room or location. It is ideal for industrial environments where background noise can mask the sound of your ringing telephone. Includes mounting screws.
• Wall mountable
• On/Off switch
• Multiple tone and pitch selection
• Volume control
• Multiple input types
• 8-12 ohm output for horn speaker
• No battery or external power required
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