Accessories overview - Converter
![](https://www.hw-group.com/files/styles/hwg_distrib_term_thumbnail/public/taxonomy/18/converter.png)
Optional converters and accessories for HW group devices and sensors.
Converter
-
SMS-GW3
HWg-SMS-GW3 is a central text message (SMS) gateway that HWg devices and applications in the same network can use to dial numbers or send SMS alerts.
-
SMS-GW3 LTE
SMS-GW3 LTE is a LAN gateway for sending alarm SMS from HW group devices.