SD21 – Q-net Start Communication box
![SD21](https://q-net.com/wp-content/uploads/2016/01/SD21-1024x1024.jpg)
This unit makes the communication in the Start system between the calling units and the PC.
There is wireless communication method between the calling units and the SD21. One unit is required per system.
Specifications:
- One LAN connector
- Supports DHCP and static IP
- (Network settings can be configured on built in LCD with the help of 4 menu buttons or via Internet browser)