TOA Electronics TS-821 Chairman Unit for Infrared Conference System

The TOA Electronics TS-821 is a top - notch Chairman unit designed for infrared conference systems. Its cordless design makes installation and removal a breeze. The unit comes with a priority speech key, enabling it to take the lead over TS - 822 Delegate units during speaking. It can work with either the AD - 0910 AC adapter or the BP - 900A lithium - ion battery and has a remaining battery indicator. There are two types of dedicated microphones available as optional products: the TS - 923, TS - 903 standard type and the TS - 924, TS - 904 long type. Technical specs include a power source of 7.2 V DC from the lithium - ion battery or 9 V DC from the AC adapter, a max current consumption of 390 mA, and a wavelength of 870 nm. It has multiple audio and control channels, a covering range of 7 m radius, and various input and output options. With features like monitor and headphone volume control, it offers great functionality. The battery lasts about 10 hours, and it can operate in up to 90% humidity. The case is made of PC resin in black, and the speaker net has a black matte finish. It measures 205.7 (W) x 70.3 (H) x 164.2 (D) mm and weighs 525 g.

Using the TOA Electronics TS - 821 is easy. First, you can choose to power it with the AD - 0910 AC adapter or the BP - 900A lithium - ion battery. If you're using a microphone, connect it to the XLR - 4 - 31 type microphone terminal. When you want to speak with priority, just press the priority speech key. You can control the monitor and headphone volume according to your needs. For the battery, keep an eye on the remaining battery indicator. It can last about 10 hours, so plan your usage accordingly. When it comes to humidity, make sure the environment has 90% RH or less and no condensation. As for maintenance, keep the unit clean. Wipe the case made of PC resin gently with a soft cloth. The speaker net with a black matte finish can also be cleaned carefully. Don't expose the unit to extreme temperatures or rough handling.