Optional Add-ons All hardware Alarm Communicators Landline Alternatives Access Control GSM Intercoms Optional Add-ons 15VDC 1A - Plug-in PSU £18.00 PSU-HW | DIN-Rail Mounting Bracket for 15VDC PSU £18.00 ULTRA | Ultra High-Gain YAGI External Directional Antenna £134.40 Extension cable for 'Ultra Directional from £30.00 MEGA-30 | External High Gain Magnetic 4G Antenna (3–5 dBi) £45.60 GSM Antenna - Anti-Vandal bolt-through mount £30.00 GSM Antenna - Blade adhesive stick-on mount £25.20
