Loud tone caller is powered by the pABX and pSTn line voltage (60-100 V
AC). A variable output (85-105 dBA) is possible by means of a potentiometer
located within the unit. HB-105 is a suitable additional ringer device for
telephones in weather-exposed and noisy areas.
• Telephone line powered (no main voltage or batteries required)
• Greatly reduced installation costs
• Penetrating 105 dBA output
• Volume control
• Maintenance-free operation
