TOA Electronics Infrared Chairperson Station for TS-820 - TS-821 Y

The TS-821 is a chairman unit of the TOA Electronics infrared conference system. It features a priority speech key that allows it to take precedence over the optional TS-822 delegate units when you're speaking. The chairman unit can be operated on either the AD-0910 AC adapter or the BP-900A lithium-ion battery, both sold separately. Two types of dedicated microphones are also supported: the TS-923 and TS-903 standard type and the TS-924 and TS-904 long type, all sold separately. Features  For TOA Infrared Conference System Priority Speech Key AC and Battery Power Support Dedicated Standard and Long Mics Support Specs Power Source 7.2 V DC (supplied from optional lithium-ion battery), 9 V DC (supplied from optional AC adapter) Current Consumption Max. 390 mAInfrared Emitter/Detector Input Microphone terminal: XLR-4-31 type Output Monitor speaker: 8 Ω, 0.2 WHeadphone: Ø3.5 mm mini Jack (3P:monaural) x 2 LED Indicator Speech indicator, Power indicator Function Monitor volume control, Headphone volume control, Priority speech function Battery Life Approx. 10 hours Operating Temperature 0 °C to +40 °C (32 °F to 104 °F) Operating Humidity 90 %RH or less (no condensation) Finish Case: PC resin, blackSpeaker net: black, mat finish, paint Dimensions 205.7 (W) x 70.3 (H) x 164.2 (D) mm (8.1 x 2.77" x 6.46") Weight 525 g (1.16 lb) Optional Accessories Microphone: TS-923, TS-903, TS-924, TS-904 (Select either one.)