HB-704 has 4-Channel Select Flush-Mount Headset Station (4.5″ X 4.5″) Mounts in Console or Standard 2-Gang Electrical Box HB-704 is a selectable four intercom channel wall or console-mounted headset station. Microprocessor-controlled logic and switching, with momentary/latching talk button. Visual call signaling. Optional 4-wire and TW daughter boards.
Physical | |
Dimensions | (LxWxH) 44 x 117 x 114 mm |
Weight | 0.21 Kg |
Electrical | |
Voltage | 20 - 30 V |
Total Harmonic Distortion | Headset Mic - Party-line: <= 0.5%, Party-line - Headset Out: <= 0.2% |
Performance | |
Frequency Response | Headset Mic - Party-line: 300 - 15KHzĀ± 3dB, Party-line - Headset Out: 300 - 15KHzĀ± 3dB |
Maximum Gain | Headset Mic - Party-line: 41dBĀ± 2, dB Party-line - Headset Out: >= 34dB |
Signal to Noise Ratio | Headset Mic - Party-line: < -70dBu |
Output Impedance | Headset <= 25 Ohms, Party-Line: >10KOhms |
Input Impedance | Headset Mic: >= 1KOhms |
Maximum Input Level | >= 12dBu |
Crosstalk | < -60dB |
Environmental | |
Max. Ambient Temp | 0 - 50 Ā°C |