Check the listing for details. ITI GE Interlogix 60-677 Interrogator Alarm Verification Module with Enclosure. Condition: New. Listed at 20.50 USD. The Interrogator Alarm Verification Module (Interrogator Module) allows the central station operator to "listen in" and/or "talk back" to the user after an alarm has occurred. The module comes with a plastic enclosure that can use up to three microphones and two speakers (on each included). The module is connected to the phone line, ahead of the alarm panel. With the module, the central station operator can determine whether of not an alarm report is an actual alarm condition, reducing the chance for false alarm calls to the police. Concord 2-Way Voice Verification Module For 2-Way Voice Central Station Interrogator 200 Audio Verification Module Part no. 60-677 Description The Interrogator 200 Audio Verification Module prevents false alarms by letting the central station operator hear what is happening during an alarm and speak directly to the people on the premises. You cancel a false alarm easily by talking directly with the central station operator. When an intruder is detected, the central station can hear what's transpiring and send authorities immediately. Features Up to 2 modules per control panel Auto Gain Control circuitry means microphone requires no adjustments Specifications Color: White Dimensions: 6.9" wide, 4.9" high, 2.5" deep Power supply: 12 VDC @ 10 mA max current draw Compatibility: UltraGard