VIKING ELECTRONICS HD-1 Handset Interfaced DTMF Dialer

Features

• Easily connects in series with handset and headsets or interfaces directly to tip & ring with optional adapter kit
• Provides DTMF signaling across a dry pair of wires for in-house applications
• Compatible with console phone auxiliary handset jacks
• Powerd by 9 V battery (provided) or optional PS-1A 13.8V AC adapter
• "Battery OK" LED indicator
• Adjustable Touch Tone volume control
• Switch selectable transmit (per handset wiring protocol)
• Optional Talk Battery adapter (PS-1A)