The lightweight IS-RSM2.1 remote speaker microphone is specifically designed for PTT applications. With its robust housing and secure ISM interface, this unit is an ideal complement to our IS330.1 and IS530.1 mobile units.
![](https://www.staff-eye.com/wp-content/uploads/2021/03/phone_0001_IS-RSM2.1.png)
Cerificates 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 NEC500 beantragt Class I, II, III Div. 1 Groups A B C D E F G T4
Dimensions Weight: 215 g, Dimensions: 115 x 70 x 25 mm
Connection ISM interface, via the spiral cable
Power supply Via the connected device
Loudspeaker Dynamic, three fixed volume levels Sensitivity: 85dB (1mW) Bandwidth: 50Hz … 8kHz
Microphone Electric, Omnidirectional Sensitivity: -38dB + 3dB (1kHz) Bandwidth: 50Hz … 16kHz
Degree of Protection IP54 Operating temperature -20 to 60 °C
Other PTT button