CRP2B serial port connecting cable for Paradox alarm panels

4G (LTE) is faster and more future-proof, since 2G networks are being phased out. For new installations, 4G is recommended; 2G is cheaper and can be an advantage where 4G coverage is weak. Many models (FLEXi SP3, G16, CG17, G17F) are available in both versions.

Traditionally via telephone line (TIP/RING) — a universal solution that lets devices communicate regardless of brand. Trikdis's own development means that panels on the supported list (and only those) can also be connected directly and digitally via serial port or data cable — as far as we know, no one else offers this, backed by 10-15 years of development.

Yes: the E16/E16T and FLEXi SP3 are purely Ethernet, but there are also SIM-combined, dual-path (redundant) versions — e.g. the GET and the matching FLEXi SP3 variant. Ethernet is a stable, unlimited-data channel for alarm signalling.