- Description
Details
Bogen Communications VAR1 Voice-Activated Relay for Paging Systems
The Bogen Communications VAR1 Voice-Activated Relay is a DPDT relay device that is activated when an audio signal is detected at the microphone preamp or at 70V, 25V, or 600-ohm line-level inputs. It has a number of useful applications, such as muting a sound system in response to a microphone or telephone page, activation of accessory (security) equipment, or activation of a zone paging module. A slide switch is included to select the pre-amp or the line inputs. The VOX detect circuit also includes volume, sensitivity, and delay controls. The audio output is an isolated 600-ohm transformer. The unit operates from a DC power source (not included).
- Features
Features
- Two sets of C-Form (both N.O. and N.C.) relay contacts respond to audio activity
- 4 levels of input signals: microphone, 600-ohm line, 25V, and 70V speaker systems
- Built-in balanced, low noise, high gain microphone pre-amp
- A transformer-isolated, 600-ohm small signal level output of the detected audio available
- Trigger threshold adjustment
- Adjustable release delay – 0.25s to 25s
- Separate microphone pre-amp gain control
- Relay active indicator light
- Specification
Line Input Impedance 600 ohms Frequency Response 100Hz to 10kHz 70V Input Impedance 200k ohms Output Level 400 mVrms 25V Input Impedance 75k ohms Output Level 420 mVrms Mic Pre-Amp Gain 62dB Sensitivity 750 microvolts, rms for 1Vrms out Distortion < 2% Frequency Response 200Hz to 10kHz Output Signal-to-Noise Ratio 55dB General VOX Sensitivity 20 mV to 150 mVrms @ 600 ohms Line input Time Delay Range (Approx.) 0.25 to 25 sec. Relay Contact Rating 2A/30V DC, 0.5A/120V AC Power Requirements External 12V to 24V DC @ 100mA (sold separately) Dimensions (H x W x D) 5.38" (136.65 mm) x 3.88" (98.55 mm) x 1.38" (35.05 mm) Weight 1 lbs (0.45 kg) - Documents
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