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| | Product | Product type | Purpose |
| Modems and barriers |
 | Heading mining machine modem | PM1/J | Mining machine modem SM-PM1/J is designed to transfer information from a machine controller, e.g. a long-wall mining machine and a power switch. Data transmission is provided with the use of drain wires of cables providing power to the machine. | |  |
 | Heading mining machine modem for a power switch-off | MKW-1 | Element of data transmission from a mining machine to a contactor switch-off or a compact station providing power to a mining machine. | |  |
 | Telephone barrier | SM-PB1 | To separate underground spark-safe telephone lines from non-spark-safe telephone lines located above the ground. |  |  |
 | Telephone barrier | SM-PB2 | To separate underground spark-safe telephone lines from non-spark-safe telephone lines located above the ground. | |  |
 | Analogue telephone modem | SM-AM5 | Telephone modem 2400 ÷ 33600 b/s | |  |
 | Analogue telephone modem | SM-AM6 | Telephone modem 2400 ÷ 33600 b/s | |  |
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