Download the latest firmware from the installer portal. Use CORTEX Update Tool or Commander software. Connect the device via USB or COM programmer and follow the on-screen instructions.
How to configure RT4-5GP for DSC panel?
In Commander software, select DSC1 or DSC2 mode depending on your panel model. Connect via PC-LINK or 4-wire connection. Make sure Contact ID transmission is enabled in the panel programming.
Why does RT4-5GP not register on GSM network?
Check SIM card validity and balance. Make sure the SIM is not PIN-locked. Check antenna connection and signal level. In software, verify APN settings according to carrier requirements.
How to connect Defendex 2.0 with existing RT4-5GP?
Configure the server (IP and port) in RT4-5GP to point to your Defendex server. On port 9236, Defendex accepts GSM connections. Full guide is in the Defendex installation manual.
How to add a new site to the Defendex mobile app?
Open the app, press + or Add site. Scan the QR code generated in the Defendex admin panel for the specific site. The site will appear in the list immediately.
What to do if Win SC cannot see CU4000 panel?
Check COM port settings - Win SC and CU4000 must use the same port and same speed (usually 9600 baud). Check USB-COM adapter drivers. Restart Win SC after changing the port.
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