Sennheiser RI250 Wireless Listening System

RI 250 Wideband Infrared Stethoset Receiver

The RI 250 wideband stethoset receiver operates on the new extremely reliable carrier frequency of 2.3 MHz. It is fitted with an easy-to-use on/off/volume control. The receiver is powered by the environmentally friendly BA 151 NiMH rechargeable battery.

Features�Benefits

Wideband stethoset receiver
Excellent transmission reliability due to new carrier frequency (2.3 MHz)
Extremely lightweight�only 1.44 oz including battery pack
Very easy to use
Excellent speech intelligibility and good music reproduction
Environmentally friendly�operates on rechargeable NiMH battery pack

Technical Data

Modulation - wideband FM, mono
Carrier frequency - 2.3 MHz
AF frequency response - 18�18,000 Hz
THD - < 1 %
Signal-to-noise ratio - typ. 70 dB
Max. SPL - approx. 130 dB
Audio output - 1/8" jack (0.7 V / 30 Ω) RI 250 J or S
Operating time - approx. 6 h
Weight - approx. 1.44 oz including battery pack

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