Infrared Conference Equipment IR Radiator

The SI 20 is a small- to medium-area transmitter, which can be connected to audio components via an 1/8" or 1/4" plug. It has the ability to switch transmitting frequencies from 95 kHz to 250 kHz or both for two channel/stereo operation. Capable of covering approximately 750 sq. feet, the SI 20 is sufficient for small screening rooms, or as a monitor transmitter for the projectionist at movie theaters. Coverage can be increased with the addition of DC powered Sennheiser SZI-30 slave emitters. A system with one SI 20 transmitter and up to three SZI30 slave emitter panels is ideal for small- to medium-sized theaters where a SZI 1029-T or SI 1013/SZI 1029-T system would be too large.

→ Easy installation; precise alignment
→ Radiator with integral modulator
→ 2-channel wideband, switchable modulator
→ Charging compartments for two BA90 batteries

Carrier frequency	6 MHz
Current consumption	150 mA
Dimensions	4.6 x 1 x 3.5 in. (118 x 25 x 90 mm)
Effective radiated power	0.5 W
IR diodes	11
Max. coverage area	861 sq. ft. (80 m²)
Nominal deviation	± 50 kHz
Operating voltage (mains)	24 - 27 V DC
Output impedance	approx. 20 kΩ o. 50 Ω
Weight	4.8 oz. (135 g)