Specifications of SM18N4-Ex
| Dimensions | 86.3* 62.1* 43.8mm |
| Weight | about 160 g |
| Color | black |
| PTT Key | available |
| Emergency Key | available |
| Microphone Sensitivity | –42±3 dB @ 1 kHz 3.0 V 2.2 K, 0 dB = 1 V/Pa |
| Speaker Power | 1 W (rated); 2 W (max.) |
| Speaker Impedance | 20Ω±15% @ 1 kHz |
| Speaker Frequency Response | 78±3dB@1kHz at 1w/30cm |
| IP Rating | IP67 |
| Anti-explosion levels | ib IIC Ex level |
| Operating Temperature | –20℃ to 50℃ |
| Storage Temperature | –40℃ to 85℃ |
* Product images, specifications, features, and accessories shown on this page are subject to change due to ongoing technology upgrades and production improvements. To ensure you receive the correct product and compatible accessories, please contact the Hytera sales team for the latest information before placing an order. Hytera reserves the right to modify product details without prior notice.