[. . . ] S 220 S 220 Portable 2-Channel Infrared System The S220 is a portable, two-channel infrared system with the ability to change modes of operation, from single channel transmission (12, 500 square ft coverage) to two channel operation (6, 250 square ft coverage), at the flick of a switch. [. . . ] These outputs allow the S 220's input signals to be fed through the unit to a house PA system or a tape recorder (i. e. Setup is extremely easy, making it a natural for schools, courtrooms, and hotel conference/ convention rooms. The SC110, soft carrying case, protects the S 220 during transport and can store microphones and cable. Features--Benefits · New, higher sub-carrier frequencies to avoid interference from fluorescent lighting · Barrier strip for easy installation · Cost effective for areas up to 4, 000 sq. · DC loop-through and daisy-chain capabilities · Available in black · 1-year warranty · Greater coverage area · Convenient interconnectivity · Controlled from a single location · Ease of installation · Excellent reliability Technical Data Subcarrier frequency Transmission area Inputs Outputs Power requirements Dimensions in inches Weight 95 and/or 250 kHz selectable or stereo 12, 500/6, 250 sq. [. . . ] 8 oz Product Variants SZI 1015T/NT SZI 1015T with NT 1015-120 power supply SZI 1015T-W SZI 1015T in white (no power supply) SZI 1015T-W/NT SZI 1015T in white with NT 1015-120 power supply S 220 S 220 Optional Accessories Floor stand Power supply Charger for one BA 90 Charger for 10 BA 90's Charger for 20 BA 90's BA 90 and carrying case SEMS 3000 NT 1015-120 L90-120 L 92-10/NT L 92-20/NT HC101 Recommended Receivers RI 100 S Single channel, stethophone receiver with BA 90 rechargeable battery RI 100-J Same as RI 100 A but with 1/8" mono jack for connecting with hearing aid accessories [. . . ]