IS-RSM2.1 - ATEX ZONE 1/21 - remote speaker microphone

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IS-RSM2.1 - ATEX ZONE 1/21 - remote speaker microphone 

The lightweight IS-RSM2.1 remote speaker microphone is specially designed for PTT applications. With its robust housing and safe ISM interface, it is an ideal addition to our mobile devices IS330.1 and IS530.1.


* loud speaker dynamic & 3-stage volume control
* power supply over the connected device
* push-to-talk
* intercom and volume control


ATEX zone 1/21
II 2G Ex ib IIC T4 Gb
II 2D Ex ib IIIC T135°C Db

IECEx zone 1/21
Ex ib IIC T4 Gb
Ex ib IIIC T135°C Db

Class I, II, III Division 1 Groups A B C D E F G, T4
Intrinsically Safe



Technical Data:

type IS-RSM2.1
size 115 x 70 x 25 mm
weight 180 g
Power supply Over the connected device
IP54 Operation range from -20 °C up to 60 °C
Connection ISM interface
Cable length Spiral cable
Microphone Electret, Omni-Directional, Sensitivity: -38dB ± 3dB (1kHz), Bandwidth: 50Hz … 16kHz
Loudspeaker Dynamic, 3-stage volume control, Sensitivity: 85dB (1mW), Bandwidth: 50Hz … 8kHz

remote speaker microphone,
quick start manual and safety instructions






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