The SZI 1015T from Sennheiser is a 2W infra-red emitter with a 2.3MHz integral modulator. The emitter offers a coverage area of 400 m² and operates at 2.3MHz to avoid interference from fluorescent lights.
Can be daisy-chained to the SZI1015-T to expand the coverage area
Easy to install
2.3MHz sub-carrier frequency to avoid fluorescent interference