ASK-4 #304 is a four- zone audio monitoring system designed for direct connection to a DVR or IP Camera. The IF-4 audio interface adapter is designed to connect up to four Verifact A microphones, supplies power into it and drives the audio signal into the DVR, IP Cameras or Video Servers. Has adjustable gain output for each microphone to prevent overdriving the receiver. An audio test switches indicate the presence of audio at the output of the unit as indicated by the LED. The Verifact A microphones are omni-directional electret condenser type with pre-amp that produces line level audio outputs. The microphones can be up to 1000’ from the IF-4. It can pick up normal sounds approximately 15’ away all directions or 30’ diameter circle.
Kit Contents
Application
...Anywhere that transmitting audio into a DVR, Video Servers, IP Network Cameras is required etc.
Features
| Specifications (Microphone) | |
| Input (3-pin terminal block) | Line Level (0dB@1KΩ) |
| Audio Input Impedance | 17.5kΩ |
| Audio Output Impedance | 600Ω @ 1kHz |
| Audio Output Gain | Up to +10dB |
| Power Requirements | +12 Vdc, 500mA |
| Dimensions | 11½”L x 4¾”W x 1¼”H |
| Weight | 12.5 oz |
| Specifications (Microphone - Model A) | |
| Type | Electret Condenser |
| Output | Line Level (0 dB 600Ω @ 1 kHZ) |
| Frequency response | 50 Hz to 15 kHz ± 1 dB |
| Current drain | 10 mA |
| Supply voltage | 12Vdc |
| Dimensions | 4"Dia x 1 ½"H |
| Weight | 3.5 oz |
| Weight of the kit | 4 lbs |