Bogen Special Purpose Electronics

Ambient Noise Sensor, Voice Activated Relay, VOX, Tone Generator, Night Ringer, Talkback Amplifier, Door Phone, Attenuators, Line-Matching Transformer

Ambient Noise Sensor
	ANS501 • Automatically adjusts paging level as ambient noise levels rise and fall • Supports up to 4 small sensor microphones (1 ANS500M included) for large areas • Sensor microphones can be located up to 2,000 feet from control unit • Easily connects in at pre-amp out -power amp in process loop • Input/output: 600-ohm balanced, unbalanced

Voice-Activated Relay
VAR1 • 2 sets of C-Form (N.O. & N.C.) relay contacts respond to audio activity • 4 levels of input signals: microphone, 600-ohm line, 25V, & 70V speaker systems • Built-in balanced, low noise, high gain microphone pre-amp • A transformer-isolated, 600-ohm small signal level output of detected audio available • Trigger threshold adjustment

Tone Generator
	TG4C • 4 types of tones: steady, pulsed alarm, slow whoop, and chime • Tones triggered by external contact closure (momentary or long duration) • Choice of continuous generation of tones or two-burst operation (except for steady tone) • External audio signal can pass through TG4C and is suppressed during tone generation • Adjustable tone level and pitch • 600-ohm output

Night Ringer
NR100 • Responds to 90V ring signals or external contact closures • Produces dual-frequency electronic ringer tone • Easily connects to any paging system • Automatically mutes background music while ringing • Ringer volume control • Compact size • Low current draw

Talkback Amplifier
	TBA15 • Hands-free 2-way conversations through the paging system • 15W of speaker power • Works on 25V and 70V speaker systems • Adjustable switching sensitivity control for switching from listen to talk • Talk Back and page volume controls • Mute input forces amplifier into page mode

Door Phone
ADP1 • Suitable for indoor or outdoor station, door, or gate communications • Secure entry access to commercial, industrial, or residential locations • Pushbutton initiates the call at remote locations • Adjustable microphone and speaker volumes • Adjustable call timeout (15 seconds to 2 minutes)

Attenuators
	AT10A, AT35A  • Adjusts loudspeaker output levels on 25V and 70V systems • 2 models control up to 10-watt or 35-watt speaker systems • 10 attenuation steps and an off setting • Mounts in standard electrical box • Simple connections

Attenuators
	ATP10, ATP35 • Bypass feature allows emergency announcements to be heard at highest level even if local speaker volume is set low or off • Adjusts loudspeaker output levels on 25V and 70V systems • 2 models control up to 10-watt or 35-watt speaker systems • 10 attenuation steps and an off setting • Mounts in standard electrical box

Line-Matching Transformer
	WMT1A  • Hi-Z, 10k-ohm primary impedance • Lo-Z, 600-ohm secondary impedance, balanced with center tap • Matches high-to-low impedance or low-to-high impedance • Adapts line level signals to microphone inputs • RCA connector for Hi-Z side • Screw terminals for Lo-Z side