Description Pro Intercom LS3MT Loudspeaker Station Desktop Multi Circuit Duplex Talkback Desktop or Wall-mount. Multi-circuit. Duplex* talkback. Remote override The Pro Intercom LS3MT is designed to be used on Desktop or Wall-mount. It is a muti-circuit, duplex, talkback, with remote override, loudspeaker station. The Pro Intercom LS3MT's full duples feature will work in moderately noisy environments, since it is built deep cut in sidetone automatically applied when the LS3 is sensing that a microphone has been connected but not an earspeaker. In this mode, the sidetone is able to be adjusted with a front panel recessed screwdriver adjust control which is rotated until any feedback is suppressed. When the LS3 is sensing a headset, sidetone is restored automatically to the fixed setting, but seems perfect for use with a headset. three modes of operation: 1. Press-to-talk, release-to-listen using the speaker as the microphone in the talk mode, 2. Full duplex, simultaneous talk/listen when a close-talking, noise-canceling gooseneck is plugged in. 3. As a headset station when a headset is connected instead of a gooseneck mic. Override Since LS3s are likely to be used in remote locations, they are subject to having their front panel controls left in positions that will prevent communications from the Master Station. The level can be turned down, the speaker switch left in the Off position etc. Pro Intercom Master Stations are all equipped with an override tone generator. When this inaudible tone is sent out and received by an LS3, it automatically shifts to a predetermined group of settings, restoring volume, and resetting the speaker setting to Listen. The choices of these override settings are determined by the positioning of links on the rear of the LS3's circuit board, and fully explained in the instructions. When override is controlling the LS3, a green LED lights on the front panel. SPECIFICATIONS Power required:24~30 VDC, 40~160 mA (depending upon volume level) Microphone:200 ~ 600 ohm unbalanced Audio Output:Speaker - 3W max. 96dB SPL at 1m Headset - 8 to 4k ohm Line Bridging Impedance:Audio - 200 ohm, DC - 5k ohm Size:(LS-3 Only) [W x H x D] 11.6x4.55x1.8 in. (294.6x115.6x45.7 mm.) Weight: 1.25 lbs. (.7 Kg)
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